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

### 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:
On Saturday she sold twice as many as on Friday, so she sold 2*30 = <<2*30=60>>60
On Sunday, she sold 15 fewer than on Saturday, so she sold 60-15 = <<60-15=45>>45
She sold 30+60+45= <<30+60+45=135>>135 in total
#### 135