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

### Instruction:
Carol has $60 and saves $9 per week. Mike has $90 and saves $3 per week. How many weeks before Carol and Mike both have the same amount of money?

### 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.