Fill in the blanks.
65% of the girls are equal to 90% 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.
65% =
65100 =
132090% =
90100 =
9101320 of the girls =
910 of the boys
Make the numerators the same using the LCM of 13 and 9.
LCM of 13 and 9 = 117
13 x 920 x 9 of the girls =
9 x 1310 x 13 of the boys
117180 of the girls =
117130 of the boys
The totals are shown in the denominators.
Number of girls = 180 u
(b)
Number of boys = 130 u
(c)
Total number of girls and boys
= 180 u + 130 u
= 310 u
(d)
Difference between the number of girls and boys
= 180 u - 130 u
= 50 u
Answer(s): (a) 180; (b) 130; (c) 310; (d) 50