The ratio of the number of boys to the number of girls is 5 : 8.
Each boy is given 7 stickers.
Each girl is given 2 stickers.
The total number of stickers is 459.
- 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 |
7 |
2 |
Total stickers |
35 u |
16 u |
(a)
Total number of stickers
= 35 u + 16 u
= 51 u
51 u = 459
1 u = 459 ÷ 51 = 9
Number of children
= 5 u + 8 u
= 13 u
= 13 x 9
= 117
(b)
Number of more girls than boys
= 8 u - 5 u
= 3 u
= 3 x 9
= 27
(c)
Number of more stickers given to the boys than girls
= 35 u - 16 u
= 19 u
= 19 x 9
= 171
Answer(s): (a) 117; (b) 27; (c) 171