Answer:
63 boys
Step-by-step explanation:
Given that the ratio of boys : girls = 7 : 1 = 7x : x ( x is a multiplier ), then
7x = x + 54 ( 54 more boys than girls )
Subtract x from both sides
6x = 54 ( divide both sides by 6 )
x = 9, hence
number of boys = 7x = 7 × 9 = 63
