Question

Tom has a collection of 30 CDs and Nita has a collection of 18 CDs. Tom is adding 1 CD a month to his collection while Nita is adding 5 CDs a month to her collection. Find the number of months after which they will have the same number of CDs.

Answer 1

T = 30 + m
N= 18 + 5m
-> T = N
... = ....

Answer 2

x = 3.

Answer 3

30 + x = 18 + 5x. Solve for x to get x = 3.

Answer 4

It will take 3 months in order for Nita will have the same number of CDs as Tom does!