Fill in the blanks.
Number of women at first is 20% of the adults.
Number of women is then increased to 65%.
- Number of women at first = _____ u
- Number of women in the end = _____ u
- Increase in the number of women = _____ u
- Number of adults in the end = _____ u
|
Women |
Men |
Before |
1 x 7 = 7 u |
4 x 7 = 28 u |
Change |
+ ? |
No change |
After |
13 x 4 = 52 u |
7 x 4 = 28 u |
(a)
Change percentage into units.
20% =
20100 =
15 65% =
65100 =
1320 Fraction of the adults who are men at first
= 1 -
15 =
45 Fraction of the adults who are men in the end
= 1 -
1320=
720 Number of men at first and in the end remains the same.
The number of men is the unchanged quantity.
LCM of 4 and 7 = 28
Number of women at first = 7 u
(b)
Number of women in the end = 52 u
(c)
Increase in the number of women
= 52 u - 7 u
= 45 u
(d)
Number of adults in the end
= 52 u + 28 u
= 80 u
Answer(s): (a) 7; (b) 52; (c) 45; (d) 80