Solution-Slice of ham and a slice of cheese

Slicing an average loaf of bread gives 13 medium thickness slices. Each slice of bread is to be coated with 0.05 oz. of mayonnaise. Each sandwich of two bread slices contains a slice of ham and a slice of cheese. Half of the sandwiches need to contain a sliced olive, the other half no olive. How many loaves of bread and how many ounces of mayonnaise are needed to make all of the sandwiches if you need 241 ham and cheese sandwiches with an olive?

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