Fill in the blanks.
Number of men at first is 25% of the adults.
Number of men is then increased to 35%.
- Number of men at first = _____ u
- Number of men in the end = _____ u
- Increase in the number of men = _____ u
- Number of adults in the end = _____ u
|
Men |
Women |
Before |
1 x 13 = 13 u |
3 x 13 = 39 u |
Change |
+ ? |
No change |
After |
7 x 3 = 21 u |
13 x 3 = 39 u |
(a)
Change percentage into units.
25% =
25100 =
14 35% =
35100 =
720 Fraction of the adults who are women at first
= 1 -
14 =
34 Fraction of the adults who are women in the end
= 1 -
720=
1320 Number of women at first and in the end remains the same.
The number of women is the unchanged quantity.
LCM of 3 and 13 = 39
Number of men at first = 13 u
(b)
Number of men in the end = 21 u
(c)
Increase in the number of men
= 21 u - 13 u
= 8 u
(d)
Number of adults in the end
= 21 u + 39 u
= 60 u
Answer(s): (a) 13; (b) 21; (c) 8; (d) 60