Fill in the blanks.
50% of the girls are equal to 80% 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 =
1280% =
80100 =
4512 of the girls =
45 of the boys
Make the numerators the same using the LCM of 1 and 4.
LCM of 1 and 4 = 4
1 x 42 x 4 of the girls =
4 x 15 x 1 of the boys
48 of the girls =
45 of the boys
The totals are shown in the denominators.
Number of girls = 8 u
(b)
Number of boys = 5 u
(c)
Total number of girls and boys
= 8 u + 5 u
= 13 u
(d)
Difference between the number of girls and boys
= 8 u - 5 u
= 3 u
Answer(s): (a) 8; (b) 5; (c) 13; (d) 3