The ratio of the number of girls to the number of boys is 3 : 7.
Each girl is given 5 stickers.
Each boy is given 2 stickers.
The total number of children is 70.
- 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 |
3 u |
7 u |
Stickers for each person |
5 |
2 |
Total stickers |
15 u |
14 u |
(a)
Number of children
= 3 u + 7 u
= 10 u
10 u = 70
1 u = 70 ÷ 10 = 7
Total number of stickers
= 15 u + 14 u
= 29 u
= 29 x 7
= 203
(b)
Number of less girls than boys
= 7 u - 3 u
= 4 u
= 4 x 7
= 28
(c)
Number of less stickers are given to the boys than the girls
= 15 u - 14 u
= 1 u
= 1 x 7
= 7
Answer(s): (a) 203; (b) 28; (c) 7