Billy saved $920 and spent the rest of his money. If he decreased his savings by 30%, his spending would increase by 20%. How much money did Billy have?
|
Spent (%) |
Saved (u) |
Before |
100% $920 |
100u |
Change |
- 30% |
+ 20u |
After |
70% |
120u |
Increase in savings = Decrease in spending
30% savings =
20u spending 100% savings = 920
1% savings = 920 ÷ 100 = 9.2
30% savings = 30 x 9.2 = 276
20u spending = 2761u spending = 276 ÷ 20 = 13.8100u spending = 100 x 13.8 = 1380 Amount that Billy had
= 920 + 1380
= $2300
Answer(s): $2300