Question

Hi can you help please??

Answer 1

1240 students

Explanation:

ratio of boys : girls = 11 : 9 = 11x : 9x ( x is a multiplier ) , then

11x = 9x + 124 ( subtract 9x from both sides )

2x = 124 ( divide both sides by 2 )

x = 62

total students = 11x + 9x = 20x = 20 × 62 = 1240