Fill in the blanks.
Each girl has 3 stickers.
Each boy has 4 stickers.
The ratio of the number of girls to the number of boys is 7 : 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 |
7 u |
12 u |
Number of stickers for each child |
3 |
4 |
Total number of stickers |
7 u x 3 = 21 u |
12 u x 4 = 48 u |
(a)
Change ratio into units.
Number of girls = 7 u
Number of boys = 12 u
Difference between the number of boys and girls
= 12 u - 7 u
= 5 u
(b)
Total number of girls and boys
= 7 u + 12 u
= 19 u
(c)
Total number of stickers that the girls have
= 7 u x 3
= 21 u
Total number of stickers that the boys have
= 12 u x 4
= 48 u
Difference in the number of stickers that the girls and the boys have
= 48 u - 21 u
= 27 u
(d)
Total number of stickers that the girls and boys
= 21 u + 48 u
= 69 u
Answer(s): (a) 5; (b) 19; (c) 27; (d) 69