Erika had
34 as much money as Winnie. Erika received another $121 from her buddy. In the end, Erika's money became 1
23 of what Winnie had. How much did Erika have at first?
|
Erika |
Winnie |
Before |
3x3 = 9 u |
4x3 = 12 u |
Change |
+ $121 |
|
After |
5x4 = 20 u |
3x4 = 12 u |
1
23 =
53The amount that Winnie had at first and in the end remains unchanged. Make the amount that Winnie had the same. LCM of 3 and 4 is 12.
Amount that Erika received
= 20 u - 9 u
= 11 u
11 u = 121
1 u = 121 ÷ 11 = 11
Amount that Erika had at first
= 9 u
= 9 x 11
= $99
Answer(s): $99