Ivan saved $480 and spent the rest of his money. If he decreased his savings by 10%, his spending would increase by 15%. How much money did Ivan have?
| |
Spent (%) |
Saved (u) |
| Before |
100%
$480 |
100u |
| Change |
- 10% |
+ 15u |
| After |
90% |
115u |
Increase in savings = Decrease in spending
10% savings =
15u spending 100% savings = 480
1% savings = 480 ÷ 100 = 4.8
10% savings = 10 x 4.8 = 48
15u spending = 481u spending = 48 ÷ 15 = 3.2100u spending = 100 x 3.2 = 320 Amount that Ivan had
= 480 + 320
= $800
Answer(s): $800
