There are 53 girls and boys altogether.
25 of the number of girls is 17 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 = 2 u - 17
Number of children
= 5 u + 2 u - 17
= 7 u - 17
7 u - 17 = 53
7 u = 53 + 17
7 u = 70
1 u = 70 ÷ 7 = 10
Number of girls
= 5 u
= 5 x 10
= 50
(b)
Number of boys
= 53 - 50
= 3
Number of more girls than boys
= 50 - 3
= 47
Answer(s): (a) 50; (b) 47