Fill in the blanks.
35% 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.
35% =
35100 =
72070% =
70100 =
710720 of the girls =
710 of the boys
Make the numerators the same using the LCM of 7 and 7.
LCM of 7 and 7 = 7
7 x 120 x 1 of the girls =
7 x 110 x 1 of the boys
720 of the girls =
710 of the boys
The totals are shown in the denominators.
Number of girls = 20 u
(b)
Number of boys = 10 u
(c)
Total number of girls and boys
= 20 u + 10 u
= 30 u
(d)
Difference between the number of girls and boys
= 20 u - 10 u
= 10 u
Answer(s): (a) 20; (b) 10; (c) 30; (d) 10