The ratio of the number of girls to the number of boys is 3 : 5.
Each girl is given 9 stickers.
Each boy is given 3 stickers.
The total number of stickers is 126.
- How many children are there?
- How many more boys than girls are there?
- How many more stickers are given to the girls than the boys?
|
Girls |
Boys |
Number |
3 u |
5 u |
Stickers for each person |
9 |
3 |
Total stickers |
27 u |
15 u |
(a)
Total number of stickers
= 27 u + 15 u
= 42 u
42 u = 126
1 u = 126 ÷ 42 = 3
Number of children
= 3 u + 5 u
= 8 u
= 8 x 3
= 24
(b)
Number of more boys than girls
= 5 u - 3 u
= 2 u
= 2 x 3
= 6
(c)
Number of more stickers given to the girls than boys
= 27 u - 15 u
= 12 u
= 12 x 3
= 36
Answer(s): (a) 24; (b) 6; (c) 36