Fill in the blanks.
15% of the girls are equal to 40% 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.
15% =
15100 =
32040% =
40100 =
25320 of the girls =
25 of the boys
Make the numerators the same using the LCM of 3 and 2.
LCM of 3 and 2 = 6
3 x 220 x 2 of the girls =
2 x 35 x 3 of the boys
640 of the girls =
615 of the boys
The totals are shown in the denominators.
Number of girls = 40 u
(b)
Number of boys = 15 u
(c)
Total number of girls and boys
= 40 u + 15 u
= 55 u
(d)
Difference between the number of girls and boys
= 40 u - 15 u
= 25 u
Answer(s): (a) 40; (b) 15; (c) 55; (d) 25