Fill in the blanks.
45% of the girls are equal to 60% 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.
45% =
45100 =
92060% =
60100 =
35920 of the girls =
35 of the boys
Make the numerators the same using the LCM of 9 and 3.
LCM of 9 and 3 = 9
9 x 120 x 1 of the girls =
3 x 35 x 3 of the boys
920 of the girls =
915 of the boys
The totals are shown in the denominators.
Number of girls = 20 u
(b)
Number of boys = 15 u
(c)
Total number of girls and boys
= 20 u + 15 u
= 35 u
(d)
Difference between the number of girls and boys
= 20 u - 15 u
= 5 u
Answer(s): (a) 20; (b) 15; (c) 35; (d) 5