The ratio of the number of boys to the number of girls is 2 : 5.
Each boy is given 7 stickers.
Each girl is given 2 stickers.
The total number of children is 70.
- How many stickers are given to the children?
- How many less boys than girls are there?
- How many less stickers are given to the girls than the boys?
|
Boys |
Girls |
Number |
2 u |
5 u |
Stickers for each person |
7 |
2 |
Total stickers |
14 u |
10 u |
(a)
Number of children
= 2 u + 5 u
= 7 u
7 u = 70
1 u = 70 ÷ 7 = 10
Total number of stickers
= 14 u + 10 u
= 24 u
= 24 x 10
= 240
(b)
Number of less boys than girls
= 5 u - 2 u
= 3 u
= 3 x 10
= 30
(c)
Number of less stickers are given to the girls than the boys
= 14 u - 10 u
= 4 u
= 4 x 10
= 40
Answer(s): (a) 240; (b) 30; (c) 40