Each day a small business owner sells 200 pizza slices at $3.00 per slice and 85 sandwiches at $2.50 each. Business expenses come to $60 per day. What is the owner's profit for a ten-day period?

How much are the owner's expenses for 10 days?

10 * 130 = $1300

How much money does the owner make selling pizzas per day?

200 * 3 = $600

How much money does the owner make selling sandwiches per day?

85 * 2 = $170

In one day, the owner sells 600 + 170 = $770 worth of pizza and sandwiches

Over the course of ten days, that is 10 * 770 = $7700

Profit = revenue - cost = 7700 - 1300 = $6400

There ya go