SOLUTION: Air passes through a duct at the rate of 680 cubic inches per second. How many cubic feet of air passes through the duct in 2.5 minutes? (round to the nearest cubic foot)

Algebra ->  Conversion and Units of Measurement -> SOLUTION: Air passes through a duct at the rate of 680 cubic inches per second. How many cubic feet of air passes through the duct in 2.5 minutes? (round to the nearest cubic foot)      Log On


   

Question 1158329: Air passes through a duct at the rate of 680 cubic inches per second. How many cubic feet of air passes through the duct in 2.5 minutes? (round to the nearest cubic foot)
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
1728 in^3/ft^3 (12*12*12)
so 680 in^3/sec*150 sec/2.5 min*1 ft^3/1728 in^3=59.03 or 59 ft^3

rough check.
about 2.5 sec for 1 ft^3 of air
150sec/2.5 ft^3/sec=60 ft^3