Fill in the blanks.
20% of the boys are equal to 55% 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 =
1555% =
55100 =
112015 of the boys =
1120 of the girls
Make the numerators the same using the LCM of 1 and 11.
LCM of 1 and 11 = 11
1 x 115 x 11 of the boys =
11 x 120 x 1 of the girls
1155 of the boys =
1120 of the girls
The totals are shown in the denominators.
Number of boys = 55 u
(b)
Number of girls = 20 u
(c)
Total number of boys and girls
= 55 u + 20 u
= 75 u
(d)
Difference between the number of boys and girls
= 55 u - 20 u
= 35 u
Answer(s): (a) 55; (b) 20; (c) 75; (d) 35