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 2 stickers.
The total number of stickers is 183.
- 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 |
2 |
Total stickers |
45 u |
16 u |
(a)
Total number of stickers
= 45 u + 16 u
= 61 u
61 u = 183
1 u = 183 ÷ 61 = 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 - 16 u
= 29 u
= 29 x 3
= 87
Answer(s): (a) 39; (b) 9; (c) 87