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.

[EX Q]: Joan found 75 seashells and 14 starfishes on the beach. She gave Timsome of her seashells. She has 62 seashell. How many seashells didshe give to Tim?
[EX A]: 13.0

[EX Q]: There are 34 pencils and 49 crayons in the drawer. Dan took 22pencils from the drawer. How many pencils are now in the drawer?
[EX A]: 12.0

[EX Q]: In Mr. Olsen's mathematics class, 0.7 the students received A's and 0.2 received B's. What fraction of the students received either A's orB's?
[EX A]:
0.9