Fill in the blanks.
70% of the girls are equal to 75% 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.
70% =
70100 =
71075% =
75100 =
34710 of the girls =
34 of the boys
Make the numerators the same using the LCM of 7 and 3.
LCM of 7 and 3 = 21
7 x 310 x 3 of the girls =
3 x 74 x 7 of the boys
2130 of the girls =
2128 of the boys
The totals are shown in the denominators.
Number of girls = 30 u
(b)
Number of boys = 28 u
(c)
Total number of girls and boys
= 30 u + 28 u
= 58 u
(d)
Difference between the number of girls and boys
= 30 u - 28 u
= 2 u
Answer(s): (a) 30; (b) 28; (c) 58; (d) 2