The ratio of the number of boys to the number of girls is 5 : 7.
Each boy is given 8 stickers.
Each girl is given 4 stickers.
The total number of children is 108.
- How many stickers are given to the children?
- How many less boys than girls are there?
- How many less stickers are given to the girls than the boys?
|
Boys |
Girls |
Number |
5 u |
7 u |
Stickers for each person |
8 |
4 |
Total stickers |
40 u |
28 u |
(a)
Number of children
= 5 u + 7 u
= 12 u
12 u = 108
1 u = 108 ÷ 12 = 9
Total number of stickers
= 40 u + 28 u
= 68 u
= 68 x 9
= 612
(b)
Number of less boys than girls
= 7 u - 5 u
= 2 u
= 2 x 9
= 18
(c)
Number of less stickers are given to the girls than the boys
= 40 u - 28 u
= 12 u
= 12 x 9
= 108
Answer(s): (a) 612; (b) 18; (c) 108