Last month, Erika had four times as much savings as Japheth. This month, Japheth saves $1320. As a result, he now has thrice as much savings as Erika. What was their total savings at first?
| |
Erika |
Japheth |
Total |
| Before |
4 u |
1 u |
5 u |
| Change |
|
+ $1320 |
|
| After |
1x4 =
4 u |
3x4 =
12 u |
|
The amount of savings that Erika has at first and in the end remains unchanged. Make the amount of savings that Erika has the same. LCM of 4 and 1 is 4.
Amount that Japheth saved
= 12 u - 1 u
= 11 u
11 u = 1320
1 u = 1320 ÷ 11 = 120
Total savings at first
= 4 u + 1 u
= 5 u
= 5 x 120
= $600
Answer(s): $600
