Last month, Raeann had four times as much savings as Luis. This month, Luis saves $630. As a result, he now has twice as much savings as Raeann. What was their total savings at first?
| |
Raeann |
Luis |
Total |
| Before |
4 u |
1 u |
5 u |
| Change |
|
+ $630 |
|
| After |
1x4 =
4 u |
2x4 =
8 u |
|
The amount of savings that Raeann has at first and in the end remains unchanged. Make the amount of savings that Raeann has the same. LCM of 4 and 1 is 4.
Amount that Luis saved
= 8 u - 1 u
= 7 u
7 u = 630
1 u = 630 ÷ 7 = 90
Total savings at first
= 4 u + 1 u
= 5 u
= 5 x 90
= $450
Answer(s): $450
