Fill in the blanks.
Each boy has 7 stickers.
Each girl has 12 stickers.
The ratio of the number of boys to the number of girls is 3 : 7.
- 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 |
3 u |
7 u |
Number of stickers for each child |
7 |
12 |
Total number of stickers |
3 u x 7 = 21 u |
7 u x 12 = 84 u |
(a)
Change ratio into units.
Number of boys = 3 u
Number of girls = 7 u
Difference between the number of girls and boys
= 7 u - 3 u
= 4 u
(b)
Total number of boys and girls
= 3 u + 7 u
= 10 u
(c)
Total number of stickers that the boys have
= 3 u x 7
= 21 u
Total number of stickers that the girls have
= 7 u x 12
= 84 u
Difference in the number of stickers that the boys and the girls have
= 84 u - 21 u
= 63 u
(d)
Total number of stickers that the boys and girls
= 21 u + 84 u
= 105 u
Answer(s): (a) 4; (b) 10; (c) 63; (d) 105