Vanessa had $77 more than Gem at first. After Vanessa and Gem spent an equal amount of money, Gem had
310 as much as Vanessa. How much money did Vanessa have left?
| |
Vanessa |
Gem |
Difference |
| Before |
1 u + $77 |
1 u |
$77 |
| Change |
- 1 |
- 1 |
|
| After |
10 p |
3 p |
7 p |
Difference in the amounts between Vanessa and Gem
= 10 p - 3 p
= 7 p
Since both Vanessa and Gem spent an equal amount, the difference in the amounts that Vanessa and Gem had at first and in the end remains unchanged.
7 p = 77
1 p = 77 ÷ 7 = 11
Amount that Vanessa had left
= 10 p
= 10 x 11
= $110
Answer(s): $110
