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:
Mary found 45 seashells, Melanie found 23 seashells, and Jasonfound 32 seashells on the beach. When they cleaned them, theydiscovered that 31 were cracked. How many seashells did they findtogether?
answer:
100.0


question:
Joan has 9 blue balloons but lost 2 of them. How many blue balloonsdoes Joan have now?
answer:
7.0


question:
Joan picked 43 apples from the orchard, and gave 27 apples toMelanie. How many apples does Joan have now?
answer:

16.0