David and Tim went shopping with the same amount of money. After David spent $71 and Tim spent $51, Tim had three times as much money left as David. How much money did each of them bring along for shopping?
| |
David |
Tim |
| Before |
1 u + $71 |
3 u + $51 |
| Change |
- $71 |
- $51 |
| After |
1 u |
3 u |
David and Tim brought the same amount for shopping at first.
3 u + 51 = 1 u + 71
3 u - 1 u = 71 - 51
2 u = 20
1 u = 20 ÷ 2 = 10
Amount that each of them brought along for shopping
= 1 u + 71
= 10 + 71
= $81
Answer(s): $81
