There are 111 girls and boys altogether.
45 of the number of girls is 15 more than the number of boys.
- How many girls are there?
- How many more girls than boys are there?
(a)
Number of girls = 5 u
Number of boys = 4 u - 15
Number of children
= 5 u + 4 u - 15
= 9 u - 15
9 u - 15 = 111
9 u = 111 + 15
9 u = 126
1 u = 126 ÷ 9 = 14
Number of girls
= 5 u
= 5 x 14
= 70
(b)
Number of boys
= 111 - 70
= 41
Number of more girls than boys
= 70 - 41
= 29
Answer(s): (a) 70; (b) 29