Fill in the blanks.
40% of the girls are equal to 50% 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.
40% =
40100 =
2550% =
50100 =
1225 of the girls =
12 of the boys
Make the numerators the same using the LCM of 2 and 1.
LCM of 2 and 1 = 2
2 x 15 x 1 of the girls =
1 x 22 x 2 of the boys
25 of the girls =
24 of the boys
The totals are shown in the denominators.
Number of girls = 5 u
(b)
Number of boys = 4 u
(c)
Total number of girls and boys
= 5 u + 4 u
= 9 u
(d)
Difference between the number of girls and boys
= 5 u - 4 u
= 1 u
Answer(s): (a) 5; (b) 4; (c) 9; (d) 1