Oscar saves 30% of his income. When his income was increased by 20%, his savings rose proportionately to $180. What was his original income?
| |
Savings |
Spending |
Total |
| Before |
30% |
70% |
100% |
| Change |
+ 6% |
+ 14% |
+ 20% |
| After |
36% |
84% |
120% |
New income after it was increased by 20%
= 100% + 20%
= 120%
Increase in savings
= 20% x 30%
=
20100 x 30%
= 6%
New savings in percentage
= 30% + 6%
= 36%
36% of the original income = 180
1% of the original income = 180 ÷ 36 = 5
100% of the original income = 100 x 5 = 500
Oscar's original income = $500
Answer(s): $500
