There are 210 girls and boys altogether.
56 of the number of girls is 10 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 - 10
Number of children
= 6 u + 5 u - 10
= 11 u - 10
11 u - 10 = 210
11 u = 210 + 10
11 u = 220
1 u = 220 ÷ 11 = 20
Number of girls
= 6 u
= 6 x 20
= 120
(b)
Number of boys
= 210 - 120
= 90
Number of more girls than boys
= 120 - 90
= 30
Answer(s): (a) 120; (b) 30