Anna had $930 and Pierre had $642 less than Anna at first. After Anna gave some money to Pierre, Pierre had 2 times as much as Anna. How much did Anna give to Pierre?
| |
Anna |
Pierre |
Total |
| Before |
$930 |
$288 |
$1218 |
| Change |
- ? |
+ ? |
|
| After |
1 u |
2 u |
$1218 |
Amount that Anna had = $930
Amount that Pierre had
= 930 - 642
= $288
Total amount that Anna and Pierre had
= 930 + 288
= $1218
Amount that Anna had in the end = 1 u
Amount that Pierre had in the end = 2 u
Total amount that Anna and Pierre had
= 1 u + 2 u
= 3 u
As Anna gave some money to Pierre, the total amount that Pierre and Anna had at first and in the end remains unchanged.
3 u = 1218
1 u = 1218 ÷ 3 = 406
Amount that Anna gave Pierre
= 930 - 406
= $524
Answer(s): $524
