Fill in the blanks.
Adam receives some allowance.
If he increases his savings by 30%,
his spending decreases by 50%.
- 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 |
10 x 1 = 10 u |
2 x 3 = 6 u |
If change |
+ 3 x 1 = + 3 u |
- 1 x 3 = - 3 u |
After |
13 x 1 = 13 u |
1 x 3 = 3 u |
(a)
Change percentage into units.
30% of savings = 50% of spending
310 of savings =
12 of spending
Make the numerators the same.
LCM of 3 and 1 = 3
3 x 110 x 1 of savings =
1 x 32 x 3 of spending
310 of savings =
36 of spending
Amount of savings = 10 u
(b)
Amount of spending = 6 u
(c)
Total amount of allowance
= 10 u + 6 u
= 16 u
(d)
Difference in the amount of savings and spending
= 10 u - 6 u
= 4 u
Answer(s): (a) 10; (b) 6; (c) 16; (d) 4