A two man carpenter crew sets approximately 725 sq. Ft. Of concrete forms per day. If they have erected 2/5 of this amount how many square feet of forming remain to be done today?

An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0