Question

Marc has 45 CDs in his collection, and Corinna has 61. If Marc buys 4 new CDs each month and Corinna buys 2 new CDs each month, after how many months will Marc and Corinna have the same number of CDs

Answer 1

8 months

Explanation:

x=# of months

45+4x=2x+61

45+2x=61

2x=16

x=8