Fill in the blanks.
60% of the girls are equal to 70% 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.
60% =
60100 =
3570% =
70100 =
71035 of the girls =
710 of the boys
Make the numerators the same using the LCM of 3 and 7.
LCM of 3 and 7 = 21
3 x 75 x 7 of the girls =
7 x 310 x 3 of the boys
2135 of the girls =
2130 of the boys
The totals are shown in the denominators.
Number of girls = 35 u
(b)
Number of boys = 30 u
(c)
Total number of girls and boys
= 35 u + 30 u
= 65 u
(d)
Difference between the number of girls and boys
= 35 u - 30 u
= 5 u
Answer(s): (a) 35; (b) 30; (c) 65; (d) 5