Bobby spent $110 and saved the rest of his money. If he increased his spending by 30%, his savings would decrease by 15%. How much money did Bobby have?
| |
Spent (%) |
Saved (u) |
| Before |
100%
$110 |
100u |
| Change |
+ 30% |
- 15u |
| After |
130% |
85u |
Increase in spending = Decrease in savings
30% spending =
15u savings 100% spending = 110
1% spending = 110 ÷ 100 = 1.1
30% spending = 30 x 1.1 = 33
15 u savings = 331 u savings = 33 ÷ 15 = 2.2100 u savings = 100 x 2.2 = 220 Amount that Bobby had
= 110 + 220
= $330
Answer(s): $330
