Lee had $160 more than Vaidev. After Vaidev gave $130 to Lee, Lee had 3 times as much money as Vaidev. How much money did Lee have at first?
| |
Lee |
Vaidev |
Comparing between
Lee and Vaidev
at first |
$160 more |
|
| Before |
3 u - $130 |
1 u + $130 |
| Change |
+ $130 |
- $130 |
| After |
3 u |
1 u |
Lee had $160 more than Vaidev at first. If Vaidev had another $160 at first, both of them would had the same amount of money.
3 u - 130 = 1 u + 130 + 160
3 u - 130 = 1 u + 290
3 u - 1 u = 130 + 290
2 u = 420
1 u = 420 ÷ 2 = 210
Amount that Lee had at first
= 3 u - 130
= 3 x 210 - 130
= 630 - 130
= $500
Answer(s): $500
