Fill in the blanks.
10% of the girls are equal to 70% of the boys.
- Number of girls = _____ u
- Number of boys = _____ u
- Total number of girls and boys = _____ u
- Difference between the number of girls and boys = _____ u
(a)
Change percentage into units.
10% =
10100 =
11070% =
70100 =
710110 of the girls =
710 of the boys
Make the numerators the same using the LCM of 1 and 7.
LCM of 1 and 7 = 7
1 x 710 x 7 of the girls =
7 x 110 x 1 of the boys
770 of the girls =
710 of the boys
The totals are shown in the denominators.
Number of girls = 70 u
(b)
Number of boys = 10 u
(c)
Total number of girls and boys
= 70 u + 10 u
= 80 u
(d)
Difference between the number of girls and boys
= 70 u - 10 u
= 60 u
Answer(s): (a) 70; (b) 10; (c) 80; (d) 60