Fill in the blanks.
Adam receives some allowance.
If he increases his savings by 50%,
his spending decreases by 80%.
- Amount of savings = _____ u
- Amount of spending = _____ u
- Total amount of allowance = _____ u
- Difference in the amount of savings and spending = _____ u
|
Savings |
Spending |
Before |
2 x 4 = 8 u |
5 x 1 = 5 u |
If change |
+ 1 x 4 = + 4 u |
- 4 x 1 = - 4 u |
After |
3 x 4 = 12 u |
1 x 1 = 1 u |
(a)
Change percentage into units.
50% of savings = 80% of spending
12 of savings =
45 of spending
Make the numerators the same.
LCM of 1 and 4 = 4
1 x 42 x 4 of savings =
4 x 15 x 1 of spending
48 of savings =
45 of spending
Amount of savings = 8 u
(b)
Amount of spending = 5 u
(c)
Total amount of allowance
= 8 u + 5 u
= 13 u
(d)
Difference in the amount of savings and spending
= 8 u - 5 u
= 3 u
Answer(s): (a) 8; (b) 5; (c) 13; (d) 3