Fill in the blanks.
35% of the boys are equal to 55% of the girls.
- Number of boys = _____ u
- Number of girls = _____ u
- Total number of boys and girls = _____ u
- Difference between the number of boys and girls = _____ u
(a)
Change percentage into units.
35% =
35100 =
72055% =
55100 =
1120720 of the boys =
1120 of the girls
Make the numerators the same using the LCM of 7 and 11.
LCM of 7 and 11 = 77
7 x 1120 x 11 of the boys =
11 x 720 x 7 of the girls
77220 of the boys =
77140 of the girls
The totals are shown in the denominators.
Number of boys = 220 u
(b)
Number of girls = 140 u
(c)
Total number of boys and girls
= 220 u + 140 u
= 360 u
(d)
Difference between the number of boys and girls
= 220 u - 140 u
= 80 u
Answer(s): (a) 220; (b) 140; (c) 360; (d) 80
