A delivery person uses a service elevator to bring boxes of paper up to an office. The delivery person weighs 175 lb and each box of books weighs 25 lb. The maximum capacity of the elevator
is 500lb. How many boxes of paper can the delivery person bring up at one time?

There are a total sales of 2,000 dollars on monday on tuesday sales dropped 10% on wednesday sales dropped another 20% compared with tuesday from wednesday to thursday sales increases by an equal amount to 25% of monday total sales what is the net change in dollars on total sales from monday to tuesday