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

### Instruction:
Cary is saving money to buy a new pair of shoes that cost $120. He has already saved $30. He earns $5 for every lawn he mows. If he mows 3 lawns each weekend, how many more weekends will he have to mow lawns before he can afford to buy the shoes?

### Response:
 Viatu vinagharimu $120 na tayari amehifadhi $30, hivyo bado anahitaji kuokoa $120 - $30 = $<<120-30=90>>90 zaidi.
Anapata $5 kwa ua analolima, hivyo anapata 3 malisho * $5 kwa malisho = $<<3*5=15>>15 kila mwisho wa wiki.
Itamchukua $90 / $15 kwa mwisho wa wiki = <<90/15=6>>6 wiki zaidi kuokoa pesa za kutosha kununua viatu.