Fill in the blanks.
35% of the girls are equal to 45% 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.
35% =
35100 =
72045% =
45100 =
920720 of the girls =
920 of the boys
Make the numerators the same using the LCM of 7 and 9.
LCM of 7 and 9 = 63
7 x 920 x 9 of the girls =
9 x 720 x 7 of the boys
63180 of the girls =
63140 of the boys
The totals are shown in the denominators.
Number of girls = 180 u
(b)
Number of boys = 140 u
(c)
Total number of girls and boys
= 180 u + 140 u
= 320 u
(d)
Difference between the number of girls and boys
= 180 u - 140 u
= 40 u
Answer(s): (a) 180; (b) 140; (c) 320; (d) 40