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.

[Q]: Last week Fred had 23 dollars and Jason had 46 dollars. Fred washedcars over the weekend and now has 86 dollars. How much money didFred make washing cars?
[A]: 63.0


[Q]: A spaceship traveled 0.5 light-year from Earth to Planet X and 0.1light-year from Planet X to Planet Y. Then it traveled 0.1 light-yearfrom Planet Y back to Earth. How many light-years did the spaceshiptravel in all?
[A]: 0.7


[Q]: While taking inventory at her pastry shop, Kelly realizes that she had 0.4 box of baking powder yesterday, but the supply is now down to 0.3 box. How much more baking powder did Kelly have yesterday?
[A]:
0.1