Fill in the blanks.
85% of the girls are equal to 90% 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.
85% =
85100 =
172090% =
90100 =
9101720 of the girls =
910 of the boys
Make the numerators the same using the LCM of 17 and 9.
LCM of 17 and 9 = 153
17 x 920 x 9 of the girls =
9 x 1710 x 17 of the boys
153180 of the girls =
153170 of the boys
The totals are shown in the denominators.
Number of girls = 180 u
(b)
Number of boys = 170 u
(c)
Total number of girls and boys
= 180 u + 170 u
= 350 u
(d)
Difference between the number of girls and boys
= 180 u - 170 u
= 10 u
Answer(s): (a) 180; (b) 170; (c) 350; (d) 10