Emily had $935 and John had $420 less than Emily at first. After Emily gave some money to John, John had 4 times as much as Emily. How much did Emily give to John?
| |
Emily |
John |
Total |
| Before |
$935 |
$515 |
$1450 |
| Change |
- ? |
+ ? |
|
| After |
1 u |
4 u |
$1450 |
Amount that Emily had = $935
Amount that John had
= 935 - 420
= $515
Total amount that Emily and John had
= 935 + 515
= $1450
Amount that Emily had in the end = 1 u
Amount that John had in the end = 4 u
Total amount that Emily and John had
= 1 u + 4 u
= 5 u
As Emily gave some money to John, the total amount that John and Emily had at first and in the end remains unchanged.
5 u = 1450
1 u = 1450 ÷ 5 = 290
Amount that Emily gave John
= 935 - 290
= $645
Answer(s): $645
