There are 151 boys and girls altogether.
45 of the number of boys is 11 more than the number of girls.
- How many boys are there?
- How many more boys than girls are there?
(a)
Number of boys = 5 u
Number of girls = 4 u - 11
Number of children
= 5 u + 4 u - 11
= 9 u - 11
9 u - 11 = 151
9 u = 151 + 11
9 u = 162
1 u = 162 ÷ 9 = 18
Number of boys
= 5 u
= 5 x 18
= 90
(b)
Number of girls
= 151 - 90
= 61
Number of more boys than girls
= 90 - 61
= 29
Answer(s): (a) 90; (b) 29