Adam spends $500 of his income and saves the rest.
When he increases his savings by 25%, his spending decreases by 5%
- How much is Adam's spending at first?
- How much is Adam's spending in the end?
- How much is Adam's income?
|
Savings |
Spending |
Before |
100% |
100 u |
Change |
+ 25% |
- 5 u |
After |
125% |
95 u |
(a)
25% of Adam's savings = 5% of Adam's spending
100% of Adam's savings = $500
1% of Adam's savings = 500 ÷ 100 = $5
25% of Adam's savings = 25 x 5 = $125
5 u of Adam's spending = $125
1 u of Adam's spending = 125 ÷ 5 = $25
100 u of Adam's spending = 100 x 25 = $2500
Amount of Adam's spending at first
= 100 u
= $2500
(b)
Amount of spending in the end
= 95 u
= 95 x 25
= $2375
(c)
Adam's income
= 100% + 100 u
= 500 + 2500
= $3000
Answer(s): (a) $2500; (b) $2375; (c) $3000