The ratio of the number of boys to the number of girls is 5 : 8.
Each boy is given 9 stickers.
Each girl is given 3 stickers.
The total number of stickers is 207.
- How many children are there?
- How many more girls than boys are there?
- How many more stickers are given to the boys than the girls?
|
Boys |
Girls |
Number |
5 u |
8 u |
Stickers for each person |
9 |
3 |
Total stickers |
45 u |
24 u |
(a)
Total number of stickers
= 45 u + 24 u
= 69 u
69 u = 207
1 u = 207 ÷ 69 = 3
Number of children
= 5 u + 8 u
= 13 u
= 13 x 3
= 39
(b)
Number of more girls than boys
= 8 u - 5 u
= 3 u
= 3 x 3
= 9
(c)
Number of more stickers given to the boys than girls
= 45 u - 24 u
= 21 u
= 21 x 3
= 63
Answer(s): (a) 39; (b) 9; (c) 63