Fill in the blanks.
20% of the girls are equal to 75% 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.
20% =
20100 =
1575% =
75100 =
3415 of the girls =
34 of the boys
Make the numerators the same using the LCM of 1 and 3.
LCM of 1 and 3 = 3
1 x 35 x 3 of the girls =
3 x 14 x 1 of the boys
315 of the girls =
34 of the boys
The totals are shown in the denominators.
Number of girls = 15 u
(b)
Number of boys = 4 u
(c)
Total number of girls and boys
= 15 u + 4 u
= 19 u
(d)
Difference between the number of girls and boys
= 15 u - 4 u
= 11 u
Answer(s): (a) 15; (b) 4; (c) 19; (d) 11