Fill in the blanks.
65% of the boys are equal to 70% of the girls.
- Number of boys = _____ u
- Number of girls = _____ u
- Total number of boys and girls = _____ u
- Difference between the number of boys and girls = _____ u
(a)
Change percentage into units.
65% =
65100 =
132070% =
70100 =
7101320 of the boys =
710 of the girls
Make the numerators the same using the LCM of 13 and 7.
LCM of 13 and 7 = 91
13 x 720 x 7 of the boys =
7 x 1310 x 13 of the girls
91140 of the boys =
91130 of the girls
The totals are shown in the denominators.
Number of boys = 140 u
(b)
Number of girls = 130 u
(c)
Total number of boys and girls
= 140 u + 130 u
= 270 u
(d)
Difference between the number of boys and girls
= 140 u - 130 u
= 10 u
Answer(s): (a) 140; (b) 130; (c) 270; (d) 10