Ken had $5.80 less than Tom. After Ken gave $3.70 to Tom, Tom would have five times as much money as Ken. How much money had Tom at first?
| |
Tom |
Ken |
| Before |
5 u - $3.70 |
1 u + $3.70 |
| Change |
+ $3.70 |
- $3.70 |
| After |
5 u |
1 u |
Ken had $5.80 less than Tom. If another $5.80 was given to Ken, Tom and Ken would have the same amount at first.
5 u - 3.70 = 1 u + 3.70 + 5.80
5 u - 1 u = 3.70 + 5.80 + 3.70
4 u = 13.20
1 u = 13.20 ÷ 4 = 3.30
Amount that Tom had at first
= 5 u - 3.70
= 5 x 3.30 + 3.70
= 16.50 + 3.70
= $20.20
Answer(s): $20.20
