a) 12 : 7
b) 10 : 7
c) 8 : 7
d) 4 : 3
Answer: d
Explanation: Boys : girls = 8 : 5 (let the boys = 8x, girl = 5x)
Total strength = 286
8x + 5x = 286
13x = 286
x = $$\frac{{286}}{{13}}$$ = 22
Boys = 176 and girls = 110
22 more girls get admitted then number of girls become
(5x + 22) = 110 + 22 = 132
New ratio of boys and girls = 176 : 132 = 4 : 3.
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