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.
Q: Ron weighed 2 colored metal balls during a science class. The blue ball weighed 6 pounds and the brown ball weighed 3.1 pounds. If Ron places both balls on the scale at the same time, what will thescale read?
A:
9.1