The ratio of the number of boys and girls in a school is 8 : 7 If the percentage increase in the number of girls and boys is 10% and 20% respectively what will be the new ratio?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 96 : 77
Let the ratio of boys and girls be = 80 : 70
After 20% increase in boys = 80 × 120/100 = 96
After 10% increase in girls = 70 × 110/100 = 77
New ratio = 96 : 77