Fill in the blanks.
55% of the girls are equal to 85% 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.
55% =
55100 =
112085% =
85100 =
17201120 of the girls =
1720 of the boys
Make the numerators the same using the LCM of 11 and 17.
LCM of 11 and 17 = 187
11 x 1720 x 17 of the girls =
17 x 1120 x 11 of the boys
187340 of the girls =
187220 of the boys
The totals are shown in the denominators.
Number of girls = 340 u
(b)
Number of boys = 220 u
(c)
Total number of girls and boys
= 340 u + 220 u
= 560 u
(d)
Difference between the number of girls and boys
= 340 u - 220 u
= 120 u
Answer(s): (a) 340; (b) 220; (c) 560; (d) 120