Question

3/5 of a class of 45 are boys.Find the no of girls I want explanation

Answer 1

no of boys = 3/5 × 45 = 27
no of girls = 45 - 27 = 18

Answer 2

$no \: of \: boys \: = \: 3 \div 5 \times 45 \\ = 27 \\ no \: of \: girls \: = \: 45 - 27 = 18.$