Bobby spent $900 and saved the rest of his money. If he increased his spending by 20%, his savings would decrease by 18%. How much money did Bobby have?
| |
Spent (%) |
Saved (u) |
| Before |
100%
$900 |
100u |
| Change |
+ 20% |
- 18u |
| After |
120% |
82u |
Increase in spending = Decrease in savings
20% spending =
18u savings 100% spending = 900
1% spending = 900 ÷ 100 = 9
20% spending = 20 x 9 = 180
18 u savings = 1801 u savings = 180 ÷ 18 = 10100 u savings = 100 x 10 = 1000 Amount that Bobby had
= 900 + 1000
= $1900
Answer(s): $1900
