Instructions: 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.
Input: Sandy had 36 pennies and 31 nickels in her bank. Her dad borrowed20 nickels from Sandy. How many nickels does she have now?
Output:
11.0