There are 82 boys and girls altogether.
34 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 = 4 u
Number of girls = 3 u - 9
Number of children
= 4 u + 3 u - 9
= 7 u - 9
7 u - 9 = 82
7 u = 82 + 9
7 u = 91
1 u = 91 ÷ 7 = 13
Number of boys
= 4 u
= 4 x 13
= 52
(b)
Number of girls
= 82 - 52
= 30
Number of more boys than girls
= 52 - 30
= 22
Answer(s): (a) 52; (b) 22