Fill in the blanks.
20% of the boys are equal to 65% 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.
20% =
20100 =
1565% =
65100 =
132015 of the boys =
1320 of the girls
Make the numerators the same using the LCM of 1 and 13.
LCM of 1 and 13 = 13
1 x 135 x 13 of the boys =
13 x 120 x 1 of the girls
1365 of the boys =
1320 of the girls
The totals are shown in the denominators.
Number of boys = 65 u
(b)
Number of girls = 20 u
(c)
Total number of boys and girls
= 65 u + 20 u
= 85 u
(d)
Difference between the number of boys and girls
= 65 u - 20 u
= 45 u
Answer(s): (a) 65; (b) 20; (c) 85; (d) 45