Pierre saves 20% of his income. When his income was decreased by 15%, his savings decreased proportionately to $170. What was his original income?
|
Savings |
Spending |
Total |
Before |
20% |
80% |
100% |
Change |
- 3% |
- 12% |
- 15% |
After |
17% |
68% |
85% |
New income after it was decreased by 15%
= 100% - 15%
= 85%
Decrease in savings
= 15% x 20%
=
15100 x 20%
= 3%
New savings in percentage
= 20% - 3%
= 17%
17% of the original income = 170
1% of the original income = 170 ÷ 17 = 10
100% of the original income = 10 x 10 = 1000
Pierre's original income = $1000
Answer(s): $1000