- Joined
- Jul 19, 2006
- Messages
- 61
- Reaction score
- 0
Yeh so I found the common denominator got answer D. However I marked answer B, that is SOOO mean, would the DAT really put an answer like this or would they be nice and put the x in the nominator?
QR: Would the DAT do this?
- Thread starter slayerdeus
- Start date
Yeh so I found the common denominator got answer D. However I marked answer B, that is SOOO mean, would the DAT really put an answer like this or would they be nice and put the x in the nominator?
- Joined
- Dec 26, 2004
- Messages
- 663
- Reaction score
- 0
ouch. I dunno if they would put it on the DAT just be mroe careful now that you know it "might" be there.
- Joined
- Dec 11, 2004
- Messages
- 11,417
- Reaction score
- 147
This is really a simple question that, unless you are careful, you can miss. Getting the 11/18x is easy, but when you scan through the answers, and you happen to come across (11/18)x first, you might just select this answer in haste without realizing the 'x' is in the wrong place. A lot of questions on the DAT will have similar answers like this to trick you. You just have to keep an eye out for questions like this.
- Joined
- Dec 11, 2004
- Messages
- 11,417
- Reaction score
- 147
The average of any set of n numbers is the sum of those numbers divided by n.
The average of a, b, and c, is (a+b+c)/3.
In the problem you would first find a common denominator (which is 6x).
1/x, 1/2x, and 1/3x would then change to 6/6x, 3/6x, and 2/6x.
After you find a common denominator, you can add up the numbers.
6/6x + 3/3x + 2/6x = 11/6x
You take the sum and divide by the number of numbers in the set.
(11/6x)/3 = 11/18x 🙂
The average of a, b, and c, is (a+b+c)/3.
In the problem you would first find a common denominator (which is 6x).
1/x, 1/2x, and 1/3x would then change to 6/6x, 3/6x, and 2/6x.
After you find a common denominator, you can add up the numbers.
6/6x + 3/3x + 2/6x = 11/6x
You take the sum and divide by the number of numbers in the set.
(11/6x)/3 = 11/18x 🙂
