There are 150 boys and girls altogether.
27 of the number of boys is 12 more than the number of girls.
- How many boys are there?
- How many more boys than girls are there?
(a)
Number of boys = 7 u
Number of girls = 2 u - 12
Number of children
= 7 u + 2 u - 12
= 9 u - 12
9 u - 12 = 150
9 u = 150 + 12
9 u = 162
1 u = 162 ÷ 9 = 18
Number of boys
= 7 u
= 7 x 18
= 126
(b)
Number of girls
= 150 - 126
= 24
Number of more boys than girls
= 126 - 24
= 102
Answer(s): (a) 126; (b) 102