Brody’s calculator has 60 * 1/4 = 60 / 4 = <<60*1/4=15>>15 hours of battery left.

After his 2-hour math exam, Brody’s calculator will have 15 - 2 = <<15-2=13>>13 hours of battery left.

# Answer

13
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Brody’s calculator can run for 60 hours on a full battery. Brody has used three quarters of its battery up, and he is about to take a two-hour math exam that will require his calculator the whole time. How many hours of battery will Brody’s calculator have left?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
13
Brody’s calculator can run for 60 hours on a full battery. Brody has used three quarters of its battery up, and he is about to take a two-hour math exam that will require his calculator the whole time. How many hours of battery will Brody’s calculator have left?
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