Fill in the blanks.
35% of the boys are equal to 50% of the girls.
- Number of boys = _____ u
- Number of girls = _____ u
- Total number of boys and girls = _____ u
- Difference between the number of boys and girls = _____ u
(a)
Change percentage into units.
35% =
35100 =
72050% =
50100 =
12720 of the boys =
12 of the girls
Make the numerators the same using the LCM of 7 and 1.
LCM of 7 and 1 = 7
7 x 120 x 1 of the boys =
1 x 72 x 7 of the girls
720 of the boys =
714 of the girls
The totals are shown in the denominators.
Number of boys = 20 u
(b)
Number of girls = 14 u
(c)
Total number of boys and girls
= 20 u + 14 u
= 34 u
(d)
Difference between the number of boys and girls
= 20 u - 14 u
= 6 u
Answer(s): (a) 20; (b) 14; (c) 34; (d) 6