Peter spent $630 and saved the rest of his money. If he increased his spending by 20%, his savings would decrease by 12%. How much money did Peter have?
| |
Spent (%) |
Saved (u) |
| Before |
100%
$630 |
100u |
| Change |
+ 20% |
- 12u |
| After |
120% |
88u |
Increase in spending = Decrease in savings
20% spending =
12u savings 100% spending = 630
1% spending = 630 ÷ 100 = 6.3
20% spending = 20 x 6.3 = 126
12 u savings = 1261 u savings = 126 ÷ 12 = 10.5100 u savings = 100 x 10.5 = 1050 Amount that Peter had
= 630 + 1050
= $1680
Answer(s): $1680
