Bobby saved $620 and spent the rest of his money. If he decreased his savings by 25%, his spending would increase by 10%. How much money did Bobby have?
| |
Spent (%) |
Saved (u) |
| Before |
100%
$620 |
100u |
| Change |
- 25% |
+ 10u |
| After |
75% |
110u |
Increase in savings = Decrease in spending
25% savings =
10u spending 100% savings = 620
1% savings = 620 ÷ 100 = 6.2
25% savings = 25 x 6.2 = 155
10u spending = 1551u spending = 155 ÷ 10 = 15.5100u spending = 100 x 15.5 = 1550 Amount that Bobby had
= 620 + 1550
= $2170
Answer(s): $2170
