quantitative reasoning

Sid wanted to buy a new expensive video camera for his house. The price of a new camera was a little steep. So, he decided to sell his old camera to the company to offset the cost. Can you solve it before looking at the answer? Students often ask which DAT study materials are actually used in...

We are giving away a free copy of the: • 2026 DAT Destroyer and Math Destroyer to one student preparing for the DAT. If you already own the DAT Destroyer and Math Destroyer, you may instead choose any 2 other books from our store. Dr. Jim Romano has been helping students prepare for the DAT...

This type of dosage and unit conversion problem combines proportions, dimensional analysis, and metric conversions — all common quantitative reasoning skills tested on the DAT and OAT. Focus on setting up units correctly step-by-step rather than trying to do the problem mentally. DAT Destroyer...

The DAT often tests range by asking which value a function cannot equal. Instead of plugging in answer choices, think about what the expression can never produce. Correct answer: D DAT Destroyer DAT Destroyer 2026 — Complete DAT Science Prep System | Dr. Jim Romano Math Destroyer 2026...

Drop your answer below. Students often ask which DAT study materials are actually used in real courses. The DAT Destroyer and Math Destroyer are the core books used in Dr. Jim Romano’s DAT preparation classes. DAT Destroyer DAT Destroyer 2026 — Complete DAT Science Prep System | Dr. Jim...

Combinations and permutations are a fundamental part of DAT Quantitative Reasoning, and understanding when to use each can make a significant difference on test day. The key distinction is straightforward: • Use permutations when order matters • Use combinations when order does not matter...

Here is a classic DAT-style math question where students often lose track of the fractions across multiple steps. The key is recognizing where the 8 students come from — they represent the group that took chemistry but did not take biology. Following the fractions step by step leads directly...

Many students forget that a regular hexagon can be divided into 6 equilateral triangles — a key idea for DAT geometry questions. If you’re preparing for the DAT or OAT, the DAT Destroyer and Math Destroyer are the core books used in Dr. Jim Romano’s DAT preparation courses, both online and in...

DAT Math Question of the Day: (See full problem in the first slide) Try to solve it before checking the solution in the second slide. The DAT Destroyer and Math Destroyer form the core foundation of the DAT study materials developed by Dr. Jim Romano. These are the same books Dr. Romano...

If you’re preparing for the DAT or OAT, the DAT Destroyer and Math Destroyer are the core books used in Dr. Jim Romano’s DAT preparation courses, both online and in person. DAT Destroyer 2026 DAT Destroyer — The Complete DAT Science Prep System Math Destroyer 2026 Math Destroyer – DAT and OAT...

Core Foundation The DAT Destroyer and Math Destroyer form the core foundation of the DAT study materials developed by Dr. Jim Romano. These are the same books Dr. Romano uses in his classroom setting. We also offer additional books for Organic Chemistry and General Chemistry if you are weak in...

Students often ask which DAT study materials are used in Dr. Romano’s DAT preparation courses. Two books sit at the core of Dr. Romano’s course curriculum, both online and in person: the DAT Destroyer and the Math Destroyer. DAT Destroyer contains challenging science problems designed to...

Try solving this DAT quantitative reasoning question before swiping to the solution. Tournament style problems like this are a common way combinations appear on the DAT. Many students preparing for the DAT begin with the core foundation materials used in Dr. Romano’s classroom DAT...

Here is a Quantitative Reasoning question similar to the type of rate and unit conversion problems students may encounter on the DAT. A swimmer swam 100 meters breaststroke in 57.13 seconds. How long would it take the swimmer to swim 200 yards in a 25 yard swimming pool if the swimmer loses...

DAT Math Question of the Day A hockey player has played 17 games out of a total of 25 games played this season. He scored a goal in 3 games. What is the probability that the player will play the next game and score a goal? A) 68% B) 12% C) 8.16% D) 10% E) 32% Answer: B 17/25 = 0.68 is...

In this short video, Prof. Blois breaks down one of the most commonly tested DAT Quantitative Reasoning topics: combinations vs permutations. Many students lose points not because the math is difficult, but because they confuse when order matters and when it does not. If you are beginning...

70 % of the Hockey referees freeze the pucks before the game. If 8 referees are chosen at random what is the probability that exactly 5 of them freeze the puck before the game? A) 70 % B) 8 % C) 5% D) 15 % E) 25 % Answer: E 8C5*(0.7)^5*(0.3)^3 8C5 = 8!/{(8-5)!*5!} = 56 560.1680.027 =...

One of the most common mistakes on DAT investment problems is confusing total value with total profit. Total investment = 50,000 Total accumulated value = 54,300 Actual profit = 4,300 The equation must reflect profit: 0.14x + 0.02(50,000 − x) = 4,300 Once the setup is correct, the...

Here is a classic combined work rate problem similar to what you may encounter on the Quantitative Reasoning section of the DAT. Three printers are typing a full report. • Printer A types 1/2 of the report in 2 hours • Printer B types 1 full report in 2 hours • Printer C types 1/4 of the...

Discount word problems are a common source of lost points on the DAT Quantitative Reasoning section. In this video, Prof. Denis Blois walks through a representative discount problem step-by-step, showing how to correctly interpret percentages, compare original and sale prices, and avoid the...

Tech companies run several promotions during holiday sales. One of those promotions includes a trade-in value for a cell phone. For the older phone, a company gives you a discount equal to one-fourth of the price of the new phone. If the new phone costs $800, the total discount is applied as...

Hi everyone — wanted to share a quick video walkthrough on an important QR topic that many students struggle with: Comparison Word Problems This video breaks down how to approach DAT-style comparison problems step-by-step so you can avoid timing traps and avoid common mistakes. YouTube 📹...

Mr. Rostov invested a sum of money into an index fund that pays 9% interest per year. After 30 years, his gain was $1,326,767.85. Prior to the investment, Mr. Rostov was saving $50 per day from his salary. How long did he have to save to invest the needed amount to obtain those gains? A) 2.5...

Here is a walkthrough of a classic DAT Quantitative Reasoning comparison problem. Prof. Blois explain the setup and solution step-by-step, showing students how to break down this question type quickly and accurately on test day. If you are studying for the DAT or OAT, comparison-style word...

Here’s a quick review video from Prof. Blois covering how to approach and solve common discount word problems on the DAT. If you’re preparing for the DAT or OAT, math word problems show up often — and learning a clean, structured approach can save valuable time on test day. Prof. Blois...

Hello! I was wondering how those who recently took the DAT felt about the QR section? I've been preparing using Booster and I have been struggling quite a bit with scores ranging from 13-19 (about 19/40 to 25/40). My exam is in a few days and I have been going through questions and making sure...

This is from the Princeton Review second edition which was released October 2018. Can anyone tell me how accurate this is considering it says there are about 10 questions of trig and geometry? The ADA doesn’t list anything about those topics. I know they still appeared in some people’s exam but...

With my DAT 2 weeks away, I’m still scoring 16-17 on QR. I have no idea why — I go over all my questions and am doing the destroyer but I still can’t seem to get more than 25/40 correct. Any suggestions?

Hey guys, had a question regarding the quantitative reasoning section of the DAT, particularly about the quantitative comparison questions. On the actual DAT, how hard would you say they were on a scale of 5? I'm having a lot of trouble with such questions for some reason. I've never been...

Hi guys, i was hoping i could have some advice/motivation?? I am really struggling with the QR section of the DAT! Maths has always been a subject i was good at, im not one of the genius maths people, but definitely not bad either! So it came to a shock after taking the BC test 1, i only got a...

Hello all! I am taking my DAT very soon and was wondering if using GRE math practice questions would be a good way to get some extra practice for the quantitative reasoning section on the DAT due to the implementation of quantitative comparison questions. For those of you who have taken the DAT...

Math Destroyer and DAT BC have similar QR question, but the answers that they have for this specific type of question always differs. Someone please tell me the correct approach, thank you! Ex: 30% pop. loves cheese, 70% (or like 50%) pop. loves yogurt, 11% loves cheese and yogurt, what...

Hi! I don't really understand this question and I was hoping someone could explain it to me please :) I'm also struggling a lot with QR and wanted to get some advice for how to study. My exam is in 17 days and I'm still having a hard time with this section. Any advice would be greatly appreciated!

I'm taking my DAT on July 31, and I keep getting like 1/3 of the new QC and Data Sufficiency questions wrong. I have Bootcamp and Math Destroyer, but I'm trying to find a GRE book so I can get more practice with these types of questions. I see a bunch on Amazon that cover QC and Data...

Call me crazy, but this is going to my 2nd time taking the DAT and last time I know I used the 10 key on the keyboard for the calculator. I'm reviewing QR with Chad's videos and he says you can't use the 10 key. I assume Chad's videos are a few years old. What have you all experienced? 10 key...

Hello! I'm taking my DAT on July 31, and I plan to study for 10-11 weeks. I am most worried about QR because 1) I haven't taken math since high school and I was never good at word problems, and 2) I've NEVER taken a probability/statistics course before, so I will have to learn that from...

Hey guys! Has anyone used Chad's videos for the quantitative reasoning portion of studying for the DAT? What are your thoughts? Is it enough? Is Khan Academy better?

I started to work on the math section of dat destroyer and wanted to know how much is it like in comparison to the real DAT. I have also been doing math destroyer which is giving me a very difficult time. I just want to know which is the best representation of the test.

first question states something like: average speed of skater down hill is 23 mph. for the first 1/3 of the hill, average speed was 17 mph the average speed of the second 1/3 was 15 mph. ..what was the skier's average speed for the final 1/3 of the journey? for this question, it could be...

Finished studying for my DAT! Selling my online subscriptions for cheap. Message me! DAT Genius: Expiring October 25, 2016. Asking $65 DAT Bootcamp: Expiring August 31st, 2016. Asking $40 DAT QVault Biology expiring October 16th, 2016. Asking $30 If you want to bundle up and purchase all...