Fill in the blanks.
50% 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.
50% =
50100 =
1290% =
90100 =
91012 of the girls =
910 of the boys
Make the numerators the same using the LCM of 1 and 9.
LCM of 1 and 9 = 9
1 x 92 x 9 of the girls =
9 x 110 x 1 of the boys
918 of the girls =
910 of the boys
The totals are shown in the denominators.
Number of girls = 18 u
(b)
Number of boys = 10 u
(c)
Total number of girls and boys
= 18 u + 10 u
= 28 u
(d)
Difference between the number of girls and boys
= 18 u - 10 u
= 8 u
Answer(s): (a) 18; (b) 10; (c) 28; (d) 8