Gabby had $779 and Carl had $598 less than Gabby at first. After Gabby gave some money to Carl, Carl had 2 times as much as Gabby. How much did Gabby give to Carl?
| |
Gabby |
Carl |
Total |
| Before |
$779 |
$181 |
$960 |
| Change |
- ? |
+ ? |
|
| After |
1 u |
2 u |
$960 |
Amount that Gabby had = $779
Amount that Carl had
= 779 - 598
= $181
Total amount that Gabby and Carl had
= 779 + 181
= $960
Amount that Gabby had in the end = 1 u
Amount that Carl had in the end = 2 u
Total amount that Gabby and Carl had
= 1 u + 2 u
= 3 u
As Gabby gave some money to Carl, the total amount that Carl and Gabby had at first and in the end remains unchanged.
3 u = 960
1 u = 960 ÷ 3 = 320
Amount that Gabby gave Carl
= 779 - 320
= $459
Answer(s): $459
