Fill in the blanks.
45% of the boys are equal to 85% 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.
45% =
45100 =
92085% =
85100 =
1720920 of the boys =
1720 of the girls
Make the numerators the same using the LCM of 9 and 17.
LCM of 9 and 17 = 153
9 x 1720 x 17 of the boys =
17 x 920 x 9 of the girls
153340 of the boys =
153180 of the girls
The totals are shown in the denominators.
Number of boys = 340 u
(b)
Number of girls = 180 u
(c)
Total number of boys and girls
= 340 u + 180 u
= 520 u
(d)
Difference between the number of boys and girls
= 340 u - 180 u
= 160 u
Answer(s): (a) 340; (b) 180; (c) 520; (d) 160