The ratio of the number of boys to the number of girls is 5 : 7.
Each boy is given 7 stickers.
Each girl is given 2 stickers.
The total number of children is 144.
- 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 |
5 u |
7 u |
Stickers for each person |
7 |
2 |
Total stickers |
35 u |
14 u |
(a)
Number of children
= 5 u + 7 u
= 12 u
12 u = 144
1 u = 144 ÷ 12 = 12
Total number of stickers
= 35 u + 14 u
= 49 u
= 49 x 12
= 588
(b)
Number of less boys than girls
= 7 u - 5 u
= 2 u
= 2 x 12
= 24
(c)
Number of less stickers are given to the girls than the boys
= 35 u - 14 u
= 21 u
= 21 x 12
= 252
Answer(s): (a) 588; (b) 24; (c) 252