Problem Solving

Question 2:

Three types of pencils, J,K, and L, cost $0.05, $0.10, and $0.25 each, respectively. If a box of 32 of these pencils costs a total of $3.40 and if there are twice as many K pencils as L pencils in the box, how many J pencils are in the box?
(A) 6
(B) 12
(C) 14
(D) 18
(E) 20

Question 3:

Forty percent of the rats included in an experiment were male rats. If some of the rats died during the experiment and 30 percent of the rats that died were male rats, what was the ratio of the death rate among the male rats to the death rate among the female rats?
(A) 9/14
(B) 3/4
(C) 9/11
(D) 6/7
(E) 7/8

OA will be posted in 24 hrs time

Thanks,
Quant-Master

e + a?

Question 2:

There are x L pencils and 2x K pencils. If there are a total of 32 pencils in the box, then 32-x-2x or 32-3x of the pencils are J pencils.

L/4+L/5+.05(32-3L)=3.4

.3(L)=1.8

L=6

Number of J pencils= 32-18=14

C

Question 3:

There are a total of x rats in the experiment. Y of those rats died during the experiment.

Death rate among male rates= .30(y)/.40(x)

Death rates among female rates=.70(y)/.60(x)

3/4/(7/6)=3/4*6/7=18/28=9/14

A

1st - C
2nd - A