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]: Melanie bought a Batman game for $6.97, a strategy game for $7.90, and a Superman game for $7.73. Melanie already owns 4 games.How much did Melanie spend on video games?
[EX A]: 22.6

[EX Q]: Dan's cat had kittens and 5 had spots. He gave 7 to Tim and 4 toJason. He now has 5 kittens. How many kittens did he have to startwith?
[EX A]: 16.0

[EX Q]: Tim had 7 quarters and 9 nickels in his bank. His dad gave him 3nickels and 5 pennies. How many nickels does Tim have now?
[EX A]:
12.0