Fill in the blanks.
Number of women at first is 30% of the adults.
Number of women is then increased to 40%.
- 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 |
3 x 3 = 9 u |
7 x 3 = 21 u |
Change |
+ ? |
No change |
After |
2 x 7 = 14 u |
3 x 7 = 21 u |
(a)
Change percentage into units.
30% =
30100 =
310 40% =
40100 =
25 Fraction of the adults who are men at first
= 1 -
310 =
710 Fraction of the adults who are men in the end
= 1 -
25=
35 Number of men at first and in the end remains the same.
The number of men is the unchanged quantity.
LCM of 7 and 3 = 21
Number of women at first = 9 u
(b)
Number of women in the end = 14 u
(c)
Increase in the number of women
= 14 u - 9 u
= 5 u
(d)
Number of adults in the end
= 14 u + 21 u
= 35 u
Answer(s): (a) 9; (b) 14; (c) 5; (d) 35