1) A file cabinet contains 200 standard files. When 50 files have been stored in the cabinet, what percent of the filing cabinet is being used?

2)What will be the total cost of 2,000 sheets of paper costing two dollars per 500 sheets?

3) It takes one minute for an elevator to climb 20 floors. Each floor is 3 meters high. What is the average speed of the lift in meters per second?

4) An offset operator prints 6,000 pages in 1 hour without interruption, using 2 identical offset machines. How many pages can each machine print per minute?

5) The sales tax on a filing cabinet is $ 4. If the tax is 4%, what is the cost of the filing cabinet before tax?