You are given a math word problem and you are supposed to apply multiple mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Q: A waiter at ' The Greasy Spoon ' restaurant had 26 customers to wait on . During the lunch rush he added another 27 customers . If 27 of the customers did n't leave him a tip , how many customers did leave a tip ?

A: 26
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Q: A company invited 18 people to a luncheon , but 12 of them did n't show up . If the tables they had held 3 people each , how many tables do they need ?

A: 2
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Q: If Bob can make 100 feet of rope in 2 hours and Tim can make 75 feet of rope in 2 hours , how many feet of rope can Bob and Tim working together make in 4 hours ?

A:
350
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