Fill in the blanks.
80% of the boys are equal to 85% 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.
80% =
80100 =
4585% =
85100 =
172045 of the boys =
1720 of the girls
Make the numerators the same using the LCM of 4 and 17.
LCM of 4 and 17 = 68
4 x 175 x 17 of the boys =
17 x 420 x 4 of the girls
6885 of the boys =
6880 of the girls
The totals are shown in the denominators.
Number of boys = 85 u
(b)
Number of girls = 80 u
(c)
Total number of boys and girls
= 85 u + 80 u
= 165 u
(d)
Difference between the number of boys and girls
= 85 u - 80 u
= 5 u
Answer(s): (a) 85; (b) 80; (c) 165; (d) 5