Fill in the blanks.
Number of women at first is 15% of the adults.
Number of women is then increased to 25%.
- 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 |
17 x 3 = 51 u |
Change |
+ ? |
No change |
After |
1 x 17 = 17 u |
3 x 17 = 51 u |
(a)
Change percentage into units.
15% =
15100 =
320 25% =
25100 =
14 Fraction of the adults who are men at first
= 1 -
320 =
1720 Fraction of the adults who are men in the end
= 1 -
14=
34 Number of men at first and in the end remains the same.
The number of men is the unchanged quantity.
LCM of 17 and 3 = 51
Number of women at first = 9 u
(b)
Number of women in the end = 17 u
(c)
Increase in the number of women
= 17 u - 9 u
= 8 u
(d)
Number of adults in the end
= 17 u + 51 u
= 68 u
Answer(s): (a) 9; (b) 17; (c) 8; (d) 68