There are 114 girls and boys altogether.
56 of the number of girls is 18 more than the number of boys.
- How many girls are there?
- How many more girls than boys are there?
(a)
Number of girls = 6 u
Number of boys = 5 u - 18
Number of children
= 6 u + 5 u - 18
= 11 u - 18
11 u - 18 = 114
11 u = 114 + 18
11 u = 132
1 u = 132 ÷ 11 = 12
Number of girls
= 6 u
= 6 x 12
= 72
(b)
Number of boys
= 114 - 72
= 42
Number of more girls than boys
= 72 - 42
= 30
Answer(s): (a) 72; (b) 30