A bottle costs 1.50 € / 3 = <<1.50/3=0.50>>0.50 €.

So, four bottles cost 0.50 € * 4 = <<0.50*4=2>>2 €.

# Answer

2
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Josette bought 3 bottles of mineral water for €1.50. How much will four bottles cost?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
2
Josette bought 3 bottles of mineral water for €1.50. How much will four bottles cost?
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