Fill in the blanks.
15% of the girls are equal to 35% 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.
15% =
15100 =
32035% =
35100 =
720320 of the girls =
720 of the boys
Make the numerators the same using the LCM of 3 and 7.
LCM of 3 and 7 = 21
3 x 720 x 7 of the girls =
7 x 320 x 3 of the boys
21140 of the girls =
2160 of the boys
The totals are shown in the denominators.
Number of girls = 140 u
(b)
Number of boys = 60 u
(c)
Total number of girls and boys
= 140 u + 60 u
= 200 u
(d)
Difference between the number of girls and boys
= 140 u - 60 u
= 80 u
Answer(s): (a) 140; (b) 60; (c) 200; (d) 80