GMAT Quantitative Reasoning Practice Test 3

Question : 94 of 100

Marks: +1, -0

A Math-club class has a ratio of girls to boys of 1.5 to 4.5 . Out of all the boys

16.66 \%

are left-handed, how many left-handed boys are there in the class assuming that there are 24 students all together.

Solution:

This is a standard ratio problem.

24 \/(1.5+4.5)=4

.
The number of boys is

4 × 4.5=18

.
The number of girls is

4 × 1.5=6

16.66 \%

out of 18 are 3 boys.

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