The ratio of the number of girls to the number of boys is 5 : 8.
Each girl is given 10 stickers.
Each boy is given 5 stickers.
The total number of stickers is 900.
- 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 |
5 u |
8 u |
Stickers for each person |
10 |
5 |
Total stickers |
50 u |
40 u |
(a)
Total number of stickers
= 50 u + 40 u
= 90 u
90 u = 900
1 u = 900 ÷ 90 = 10
Number of children
= 5 u + 8 u
= 13 u
= 13 x 10
= 130
(b)
Number of more boys than girls
= 8 u - 5 u
= 3 u
= 3 x 10
= 30
(c)
Number of more stickers given to the girls than boys
= 50 u - 40 u
= 10 u
= 10 x 10
= 100
Answer(s): (a) 130; (b) 30; (c) 100