Last week, Erika had four times as much savings as Cody. This week, Cody saves $1320. As a result, he now has thrice as much savings as Erika. What is their total savings now?
|
Erika |
Cody |
Total |
Before |
4 u |
1 u |
|
Change |
|
+ $1320 |
|
After |
1x4 = 4 u |
3x4 = 12 u |
16 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 Cody saved
= 12 u - 1 u
= 11 u
11 u = 1320
1 u = 1320 ÷ 11 = 120
Total savings now
= 4 u + 12 u
= 16 u
= 16 x 120
= $1920
Answer(s): $1920