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

### Instruction:
Josette bought 3 bottles of mineral water for €1.50. How much will four bottles cost?

### Response:
A bottle costs 1.5/3 = <<1.5/3=0.5>>0.5 € / bottle.
So, four bottles cost 0.5 € x 4 = <<0.5*4=2>>2 €.
#### 2