There are 162 boys and girls altogether.
27 of the number of boys is 9 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 - 9
Number of children
= 7 u + 2 u - 9
= 9 u - 9
9 u - 9 = 162
9 u = 162 + 9
9 u = 171
1 u = 171 ÷ 9 = 19
Number of boys
= 7 u
= 7 x 19
= 133
(b)
Number of girls
= 162 - 133
= 29
Number of more boys than girls
= 133 - 29
= 104
Answer(s): (a) 133; (b) 104