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 7 : 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 |
7 u |
9 u |
Number of stickers for each child |
7 |
8 |
Total number of stickers |
7 u x 7 = 49 u |
9 u x 8 = 72 u |
(a)
Change ratio into units.
Number of boys = 7 u
Number of girls = 9 u
Difference between the number of girls and boys
= 9 u - 7 u
= 2 u
(b)
Total number of boys and girls
= 7 u + 9 u
= 16 u
(c)
Total number of stickers that the boys have
= 7 u x 7
= 49 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 - 49 u
= 23 u
(d)
Total number of stickers that the boys and girls
= 49 u + 72 u
= 121 u
Answer(s): (a) 2; (b) 16; (c) 23; (d) 121