Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
 Carol ana $60 na anaokoa $9 kwa wiki. Mike ana $90 na anaokoa $3 kwa wiki. Baada ya wiki ngapi Carol na Mike watakuwa na kiasi sawa cha pesa?


### Response:
 Hebu tuchukue x = idadi ya wiki.
60 + 9x = 90 + 3x ili kuweka sawa.
9x = 30 + 3x
6x = 30
x = <<5=5>>5
Baada ya wiki 5 watakuwa na pesa sawa.