The ratio of the number of girls to the number of boys is 5 : 7.
Each girl is given 10 stickers.
Each boy is given 4 stickers.
The total number of stickers is 702.
- 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 |
7 u |
Stickers for each person |
10 |
4 |
Total stickers |
50 u |
28 u |
(a)
Total number of stickers
= 50 u + 28 u
= 78 u
78 u = 702
1 u = 702 ÷ 78 = 9
Number of children
= 5 u + 7 u
= 12 u
= 12 x 9
= 108
(b)
Number of more boys than girls
= 7 u - 5 u
= 2 u
= 2 x 9
= 18
(c)
Number of more stickers given to the girls than boys
= 50 u - 28 u
= 22 u
= 22 x 9
= 198
Answer(s): (a) 108; (b) 18; (c) 198