Fill in the blanks.
Each boy has 9 stickers.
Each girl has 10 stickers.
The ratio of the number of boys to the number of girls is 7 : 8.
- 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 |
7 u |
8 u |
Number of stickers for each child |
9 |
10 |
Total number of stickers |
7 u x 9 = 63 u |
8 u x 10 = 80 u |
(a)
Change ratio into units.
Number of boys = 7 u
Number of girls = 8 u
Difference between the number of girls and boys
= 8 u - 7 u
= 1 u
(b)
Total number of boys and girls
= 7 u + 8 u
= 15 u
(c)
Total number of stickers that the boys have
= 7 u x 9
= 63 u
Total number of stickers that the girls have
= 8 u x 10
= 80 u
Difference in the number of stickers that the boys and the girls have
= 80 u - 63 u
= 17 u
(d)
Total number of stickers that the boys and girls
= 63 u + 80 u
= 143 u
Answer(s): (a) 1; (b) 15; (c) 17; (d) 143