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

### Instruction:
Jeremy buys 30 watermelons. He eats 3 watermelons per week. Each week he gives 2 to his dad. How many weeks will the watermelons last?

### Response:
Jeremy eats 3 watermelons per week and gives 2 to his dad. So he eats 3-2=<<3-2=1>>1 watermelon per week.
30 watermelons / 1 watermelon per week = <<30/1=30>>30 weeks
#### 30

