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]: Wendy ran 19.8 miles and walked 9.2 miles. How much farther did Wendy run thanwalk?
[EX A]: 10.6

[EX Q]: Mike has 8 orange marbles, he gave Sam 4 of the marbles. Howmany orange marbles does he now have?
[EX A]: 4.0

[EX Q]: Blake filled a bucket with 0.8 gallon of water. Later, he poured out 0.2 gallon of the water. How much water is in the bucket?
[EX A]:
0.6