Oliver saves 10% of his income. When his income was increased by 40%, his savings rose proportionately to $210. What was his original income?
|
Savings |
Spending |
Total |
Before |
10% |
90% |
100% |
Change |
+ 4% |
+ 36% |
+ 40% |
After |
14% |
126% |
140% |
New income after it was increased by 40%
= 100% + 40%
= 140%
Increase in savings
= 40% x 10%
=
40100 x 10%
= 4%
New savings in percentage
= 10% + 4%
= 14%
14% of the original income = 210
1% of the original income = 210 ÷ 14 = 15
100% of the original income = 100 x 15 = 1500
Oliver's original income = $1500
Answer(s): $1500