Lui saves 5% of his income. When his income was decreased by 40%, his savings decreased proportionately to $81. What was his original income?
| |
Savings |
Spending |
Total |
| Before |
5% |
95% |
100% |
| Change |
- 2% |
- 38% |
- 40% |
| After |
3% |
57% |
60% |
New income after it was decreased by 40%
= 100% - 40%
= 60%
Decrease in savings
= 40% x 5%
=
40100 x 5%
= 2%
New savings in percentage
= 5% - 2%
= 3%
3% of the original income = 81
1% of the original income = 81 ÷ 3 = 27
100% of the original income = 10 x 27 = 2700
Lui's original income = $2700
Answer(s): $2700
