There are 117 girls and boys altogether.
35 of the number of girls is 11 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 = 3 u - 11
Number of children
= 5 u + 3 u - 11
= 8 u - 11
8 u - 11 = 117
8 u = 117 + 11
8 u = 128
1 u = 128 ÷ 8 = 16
Number of girls
= 5 u
= 5 x 16
= 80
(b)
Number of boys
= 117 - 80
= 37
Number of more girls than boys
= 80 - 37
= 43
Answer(s): (a) 80; (b) 43