There are 137 boys and girls altogether.
25 of the number of boys is 3 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 = 2 u - 3
Number of children
= 5 u + 2 u - 3
= 7 u - 3
7 u - 3 = 137
7 u = 137 + 3
7 u = 140
1 u = 140 ÷ 7 = 20
Number of boys
= 5 u
= 5 x 20
= 100
(b)
Number of girls
= 137 - 100
= 37
Number of more boys than girls
= 100 - 37
= 63
Answer(s): (a) 100; (b) 63