The ratio of the number of girls to the number of boys is 5 : 7.
Each girl is given 8 stickers.
Each boy is given 5 stickers.
The total number of children is 108.
- How many stickers are given to the children?
- How many less girls than boys are there?
- How many less stickers are given to the boys than the girls?
|
Girls |
Boys |
Number |
5 u |
7 u |
Stickers for each person |
8 |
5 |
Total stickers |
40 u |
35 u |
(a)
Number of children
= 5 u + 7 u
= 12 u
12 u = 108
1 u = 108 ÷ 12 = 9
Total number of stickers
= 40 u + 35 u
= 75 u
= 75 x 9
= 675
(b)
Number of less girls than boys
= 7 u - 5 u
= 2 u
= 2 x 9
= 18
(c)
Number of less stickers are given to the boys than the girls
= 40 u - 35 u
= 5 u
= 5 x 9
= 45
Answer(s): (a) 675; (b) 18; (c) 45