There are 174 girls and boys altogether.
56 of the number of girls is 13 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 - 13
Number of children
= 6 u + 5 u - 13
= 11 u - 13
11 u - 13 = 174
11 u = 174 + 13
11 u = 187
1 u = 187 ÷ 11 = 17
Number of girls
= 6 u
= 6 x 17
= 102
(b)
Number of boys
= 174 - 102
= 72
Number of more girls than boys
= 102 - 72
= 30
Answer(s): (a) 102; (b) 30