Jane had twice as much money as Gem. After Jane spent $13 and Gem spent $9, Jane had $17 more than Gem. How much did Jane have in the end?
| |
Jane |
Gem |
| Before |
2 u |
1 u |
| Change |
- $13 |
- $9 |
| After |
2 u - $13 |
1 u - $9 |
Comparing Jane
and Gem
in the end |
$17 more |
|
If Gem was given another $17, the amounts that Jane and Gem each had in the end would be the same.
2 u - 13 = 1 u - 9 + 17
2 u - 1 u = 13 + 8
1 u = 21
1 u = 21 ÷ 1 = 21
Amount that Jane had in the end
= 2 u - 13
= 2 x 21 - 13
= 42 - 13
= $29
Answer(s): $29
