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

### Instruction:
On Friday, Markeesha sold 30 boxes of crackers for her scout troop's fundraiser. On Saturday, she sold twice as many as on Friday. On Sunday, she sold 15 fewer than Saturday. How many boxes did she sell over the three days?

### Response:
 Jumla ya Jumamosi ilikuwa masanduku 2*30=<<2*30=60>>60
Jumla ya Jumapili ilikuwa masanduku 60-15=<<60-15=45>>45
Jumla ni 30+60+45=<<30+60+45=135>>135