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:
Keith grew 29 cantelopes, Fred grew 16 cantelopes, and Jason grew20 cantelopes. How many cantelopes did they grow in total?
answer:
65.0


question:
At the hardware store, 0.2 the nails are size 2d and 0.5 the nails are size 4d. What fraction of the nails are either size 2d or 4d?
answer:
0.7


question:
There are 7 crayons in the drawer. Mary took 3 crayons out of thedrawer. How many crayons are there now?
answer:

4.0