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Question

The boys and girls in the college are in the ratio 3:2. If 20% of the boys and 25% of the girls are adults, what is the percentage of students who are not adult?
  1. 80%
  2. 75%
  3. 78%
  4. 50%

A
80%
B
50%
C
78%
D
75%
Solution
Verified by Toppr

Adult Boys=35×20=12

Adult Girls=25×25=10
Percentage of the student who are not adult
=[100(12+10)]%
=[10022]%=78%

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