You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
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Question: A waiter at ' The Greasy Spoon ' restaurant had 29 customers to wait on . During the lunch rush he added another 20 customers . If 34 of the customers did n't leave him a tip , how many customers did leave a tip ?

Answer: 15


Question: For the school bake sale Chloe made 28 cupcakes . If she sold 25 of them and then made 8 more , how many cupcakes would she have ?

Answer: 11


Question: Victor was working as a sacker at a grocery store where he made 6 dollars an hour . On Monday he worked 5 hours and on Tuesday he worked 5 hours . How much money did Victor make in those two days ?

Answer:
60