proportion, ratio, rate, range, eXERCISES gmat. There are 40 students in a classroom, 9/20 of them are boys and 4/5 of them are right-handed. How many right-handed boys are there in the classroom?

There are 40 students in a classroom, 9/20 of them are boys and 4/5 of them are right-handed. How many right-handed boys are there in the classroom?

(a) Between 10 and 32.

(b) Between 14 and 32.

(c) Between 10 and 18.

(d) Between 14 and 18.

(e) Between 18 and 36.


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