SOLUTION: In order to remove water from a flooded basement, two pumps, each rated at 40 gallons per minute, are used. After half an hour, the one pump burns out, and the second pump finishe

Algebra ->  Rate-of-work-word-problems -> SOLUTION: In order to remove water from a flooded basement, two pumps, each rated at 40 gallons per minute, are used. After half an hour, the one pump burns out, and the second pump finishe      Log On


   

Question 905754: In order to remove water from a flooded basement, two pumps, each rated at 40 gallons per
minute, are used. After half an hour, the one pump burns out, and the second pump finishes
removing the water half an hour later. How many gallons of water were removed from the
basement?
Answer by josgarithmetic(39613) About Me  (Show Source):
You can put this solution on YOUR website!
RT=V rate time volume.

One pump has rate 40 gallons per minute, so TWO pumps have a combined rate 80 gallons per minute. Note, half hour means 30 minutes.

The working sequence was half hour with both pumps and half hour with just one pump.

80%2A30%2B40%2A30=v in gallons;
30%2880%2B40%29
30%2A120
highlight%283600%29 gallons