Fill in the blanks.
Adam receives some allowance.
If he increases his savings by 50%,
his spending decreases by 90%.
- 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 9 = 18 u |
10 x 1 = 10 u |
If change |
+ 1 x 9 = + 9 u |
- 9 x 1 = - 9 u |
After |
3 x 9 = 27 u |
1 x 1 = 1 u |
(a)
Change percentage into units.
50% of savings = 90% of spending
12 of savings =
910 of spending
Make the numerators the same.
LCM of 1 and 9 = 9
1 x 92 x 9 of savings =
9 x 110 x 1 of spending
918 of savings =
910 of spending
Amount of savings = 18 u
(b)
Amount of spending = 10 u
(c)
Total amount of allowance
= 18 u + 10 u
= 28 u
(d)
Difference in the amount of savings and spending
= 18 u - 10 u
= 8 u
Answer(s): (a) 18; (b) 10; (c) 28; (d) 8