The ratio of the number of girls to the number of boys is 2 : 5.
Each girl is given 9 stickers.
Each boy is given 2 stickers.
The total number of stickers is 224.
- 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 |
2 u |
5 u |
Stickers for each person |
9 |
2 |
Total stickers |
18 u |
10 u |
(a)
Total number of stickers
= 18 u + 10 u
= 28 u
28 u = 224
1 u = 224 ÷ 28 = 8
Number of children
= 2 u + 5 u
= 7 u
= 7 x 8
= 56
(b)
Number of more boys than girls
= 5 u - 2 u
= 3 u
= 3 x 8
= 24
(c)
Number of more stickers given to the girls than boys
= 18 u - 10 u
= 8 u
= 8 x 8
= 64
Answer(s): (a) 56; (b) 24; (c) 64