Mr. Wolboldt and Mrs. Wolboldt went to Bob Evans for lunch. Their bill for the food was $26.50. If they plan on leaving a 20% tip, How much should they leave their server? *

 31.80

Step-by-step explanation:

First you divide 26.50 by 0.20 to get 5.3 then you add that to the starting total and you get your answer which is

37. 3/8 hours

You can get this by dividing 3/4 by 2. 

The key to doing these types of problems is remembering that if they are going faster by that much, it doesn't matter what the speeds are. You can treat it as if one is standing still and the other is going 2mph.