Fill in the blanks.
Number of women at first is 40% of the adults.
Number of women is then increased to 75%.
- 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 |
2 x 1 = 2 u |
3 x 1 = 3 u |
Change |
+ ? |
No change |
After |
3 x 3 = 9 u |
1 x 3 = 3 u |
(a)
Change percentage into units.
40% =
40100 =
25 75% =
75100 =
34 Fraction of the adults who are men at first
= 1 -
25 =
35 Fraction of the adults who are men in the end
= 1 -
34=
14 Number of men at first and in the end remains the same.
The number of men is the unchanged quantity.
LCM of 3 and 1 = 3
Number of women at first = 2 u
(b)
Number of women in the end = 9 u
(c)
Increase in the number of women
= 9 u - 2 u
= 7 u
(d)
Number of adults in the end
= 9 u + 3 u
= 12 u
Answer(s): (a) 2; (b) 9; (c) 7; (d) 12