QR Q's from ADEA?

[DoctaWalnuts]

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At a certain convention the ratio of men
to women was 3 to 8. If there were 352
people there, how many were men?
How is the answer 96?
Here's what I did...
3x=8y
x+y=352

3x=8(252-x)
x=256

y=96

BUT x is men? 3x=8y is 3MEN=8WOMEN
________________________________________________
Find the average of the following list of
three weights: 3 lb. 2oz., 4 lb. 6 oz., and
9 lb. 10 oz.

Here's what I thought, 2+6+10= 18 oz (18-16=2 oz + 1 lb)
(1 + 3 + 4 + 9+ .2)/3 = 5.7333 lbs?
_________________________________________________
What is the maximum number of 3-inch
squares (squares that are three inches on
a side) that can be cut from a sheet of tin
19 x 23 inches?
437 in / 9 = 48.5 ----can't fit 49..can fit 48
Right answer : 42


Anything will help, thank you!

 

[UCB05]

At a certain convention the ratio of men
to women was 3 to 8. If there were 352
people there, how many were men?
How is the answer 96?
Here's what I did...
3x=8y
x+y=352

3x=8(252-x)
x=256

y=96

BUT x is men? 3x=8y is 3MEN=8WOMEN
________________________________________________
Find the average of the following list of
three weights: 3 lb. 2oz., 4 lb. 6 oz., and
9 lb. 10 oz.

Here's what I thought, 2+6+10= 18 oz (18-16=2 oz + 1 lb)
(1 + 3 + 4 + 9+ .2)/3 = 5.7333 lbs?
_________________________________________________
What is the maximum number of 3-inch
squares (squares that are three inches on
a side) that can be cut from a sheet of tin
19 x 23 inches?
437 in / 9 = 48.5 ----can't fit 49..can fit 48
Right answer : 42

Anything will help, thank you!

(3 men/11 total) x 352= 3x32=96

2 oz =2/16=1/8=.125 lb

Whole squares. The usable part of the 19 inch side will yield only 6-3 inch sections. Likewise, the 23 inch side will yield only 7- 3 inch sides. 6x7=42 (wasted 59 sq inch)

 

[DoctaWalnuts]

you're the best!! Thank you so much.