Fill in the blanks.
Each girl has 7 stickers.
Each boy has 12 stickers.
The ratio of the number of girls to the number of boys is 2 : 9.
- Difference in the number of boys and girls = _____ u
- Total number of girls and boys = _____ u
- Difference in the number of stickers that the girls and the boys have = _____ u
- Total number of stickers that the girls and boys have = _____ u
|
Girls |
Boys |
Number of children |
2 u |
9 u |
Number of stickers for each child |
7 |
12 |
Total number of stickers |
2 u x 7 = 14 u |
9 u x 12 = 108 u |
(a)
Change ratio into units.
Number of girls = 2 u
Number of boys = 9 u
Difference between the number of boys and girls
= 9 u - 2 u
= 7 u
(b)
Total number of girls and boys
= 2 u + 9 u
= 11 u
(c)
Total number of stickers that the girls have
= 2 u x 7
= 14 u
Total number of stickers that the boys have
= 9 u x 12
= 108 u
Difference in the number of stickers that the girls and the boys have
= 108 u - 14 u
= 94 u
(d)
Total number of stickers that the girls and boys
= 14 u + 108 u
= 122 u
Answer(s): (a) 7; (b) 11; (c) 94; (d) 122