Fill in the blanks.
15% 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.
15% =
15100 =
32055% =
55100 =
1120320 of the boys =
1120 of the girls
Make the numerators the same using the LCM of 3 and 11.
LCM of 3 and 11 = 33
3 x 1120 x 11 of the boys =
11 x 320 x 3 of the girls
33220 of the boys =
3360 of the girls
The totals are shown in the denominators.
Number of boys = 220 u
(b)
Number of girls = 60 u
(c)
Total number of boys and girls
= 220 u + 60 u
= 280 u
(d)
Difference between the number of boys and girls
= 220 u - 60 u
= 160 u
Answer(s): (a) 220; (b) 60; (c) 280; (d) 160