Sarah had $882 and Ahmad had $612 less than Sarah at first. After Sarah gave some money to Ahmad, Ahmad had 2 times as much as Sarah. How much did Sarah give to Ahmad?
| |
Sarah |
Ahmad |
Total |
| Before |
$882 |
$270 |
$1152 |
| Change |
- ? |
+ ? |
|
| After |
1 u |
2 u |
$1152 |
Amount that Sarah had = $882
Amount that Ahmad had
= 882 - 612
= $270
Total amount that Sarah and Ahmad had
= 882 + 270
= $1152
Amount that Sarah had in the end = 1 u
Amount that Ahmad had in the end = 2 u
Total amount that Sarah and Ahmad had
= 1 u + 2 u
= 3 u
As Sarah gave some money to Ahmad, the total amount that Ahmad and Sarah had at first and in the end remains unchanged.
3 u = 1152
1 u = 1152 ÷ 3 = 384
Amount that Sarah gave Ahmad
= 882 - 384
= $498
Answer(s): $498
