Question

Total number of students in a class is 2400, and the ratio of number of boys to girls is 3:5. If the number of boys and girls is increased by z% and (z – 4)% respectively, then the total number of students in the class will become 2736. Find the value of z.

A 35.2%
B 16.5%
C 27.5%
D 25.6%
E None of these
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