You are provided with an arithmetic question. Your task is to compute the solution using the given arithmetic operations. The only arithmetic operators needed to answer the questions are'+'(addition) and'-'(subtraction). The answer should be correct to one decimal place.

Brandy made trail mix for a backpacking trip. She used 0.17 pound of peanuts, 0.17 pound of chocolate chips, and 0.06 pound of raisins. How many pounds of trail mix did Brandy make?
0.4