Fill in the blanks.
Each girl has 9 stickers.
Each boy has 10 stickers.
The ratio of the number of girls to the number of boys is 1 : 12.
- 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 |
1 u |
12 u |
Number of stickers for each child |
9 |
10 |
Total number of stickers |
1 u x 9 = 9 u |
12 u x 10 = 120 u |
(a)
Change ratio into units.
Number of girls = 1 u
Number of boys = 12 u
Difference between the number of boys and girls
= 12 u - 1 u
= 11 u
(b)
Total number of girls and boys
= 1 u + 12 u
= 13 u
(c)
Total number of stickers that the girls have
= 1 u x 9
= 9 u
Total number of stickers that the boys have
= 12 u x 10
= 120 u
Difference in the number of stickers that the girls and the boys have
= 120 u - 9 u
= 111 u
(d)
Total number of stickers that the girls and boys
= 9 u + 120 u
= 129 u
Answer(s): (a) 11; (b) 13; (c) 111; (d) 129