Fill in the blanks.
10% of the girls are equal to 35% 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 =
11035% =
35100 =
720110 of the girls =
720 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 120 x 1 of the boys
770 of the girls =
720 of the boys
The totals are shown in the denominators.
Number of girls = 70 u
(b)
Number of boys = 20 u
(c)
Total number of girls and boys
= 70 u + 20 u
= 90 u
(d)
Difference between the number of girls and boys
= 70 u - 20 u
= 50 u
Answer(s): (a) 70; (b) 20; (c) 90; (d) 50