Fill in the blanks.
Each boy has 7 stickers.
Each girl has 8 stickers.
The ratio of the number of boys to the number of girls is 4 : 9.
- Difference in the number of girls and boys = _____ u
- Total number of boys and girls = _____ u
- Difference in the number of stickers that the boys and the girls have = _____ u
- Total number of stickers that the boys and girls have = _____ u
|
Boys |
Girls |
Number of children |
4 u |
9 u |
Number of stickers for each child |
7 |
8 |
Total number of stickers |
4 u x 7 = 28 u |
9 u x 8 = 72 u |
(a)
Change ratio into units.
Number of boys = 4 u
Number of girls = 9 u
Difference between the number of girls and boys
= 9 u - 4 u
= 5 u
(b)
Total number of boys and girls
= 4 u + 9 u
= 13 u
(c)
Total number of stickers that the boys have
= 4 u x 7
= 28 u
Total number of stickers that the girls have
= 9 u x 8
= 72 u
Difference in the number of stickers that the boys and the girls have
= 72 u - 28 u
= 44 u
(d)
Total number of stickers that the boys and girls
= 28 u + 72 u
= 100 u
Answer(s): (a) 5; (b) 13; (c) 44; (d) 100