instruction:
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.
question:
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?
answer:
9.1


question:
Professor Ellison weighed 2 pieces of metal for an experiment. Thepiece of iron weighed 11.16 pounds and the piece ofaluminum weighed 0.86 pound. How much moredid the piece of iron weigh than the piece of aluminum?
answer:
10.3


question:
Nina did a running drill to get in shape for soccer season. First, Ninaran 0.08 mile. Then she ran 0.18 mile and 0.54 mile. How many miles did Nina run intotal?
answer:

0.8