The number of students studying subjects A, B and C in a school i
| The number of students studying subjects A, B and C in a school is in the proportion of 12 : 15 : 16. There is a proposal to increase the number of students studying A, B and C, respectively by 50%, 20% and 50%. What will be the new proportion of the number of students studying A, B and C?
A. 3 : 3 : 5
B. 3 : 3 : 4
C. 2 : 3 : 3
D. 5 : 8 : 12
Please scroll down to see the correct answer and solution guide.
Right Answer is: B
SOLUTION
The ratio of number of subjects A, B and C = 12 : 15 : 16
The ratio of number of subjects after increment = 12 × (3/2) : 15 × (6/5) : 16 × (3/2)
The ratio of number of subjects after increment = 18 : 18 : 24 or 3 : 3 : 4