The ratio of the number of boys to the number of girls is 3 : 7.
Each boy is given 8 stickers.
Each girl is given 2 stickers.
The total number of stickers is 152.
- 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 |
3 u |
7 u |
Stickers for each person |
8 |
2 |
Total stickers |
24 u |
14 u |
(a)
Total number of stickers
= 24 u + 14 u
= 38 u
38 u = 152
1 u = 152 ÷ 38 = 4
Number of children
= 3 u + 7 u
= 10 u
= 10 x 4
= 40
(b)
Number of more girls than boys
= 7 u - 3 u
= 4 u
= 4 x 4
= 16
(c)
Number of more stickers given to the boys than girls
= 24 u - 14 u
= 10 u
= 10 x 4
= 40
Answer(s): (a) 40; (b) 16; (c) 40