SOLUTION: A plumber contractor decides to field-test two new pumps. One is rated at 180 gal/h and the other at 250 gal/h. She tests one, then the other. Over a period of 6 h, she pumps a tot

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A plumber contractor decides to field-test two new pumps. One is rated at 180 gal/h and the other at 250 gal/h. She tests one, then the other. Over a period of 6 h, she pumps a tot      Log On


   

Question 277862: A plumber contractor decides to field-test two new pumps. One is rated at 180 gal/h and the other at 250 gal/h. She tests one, then the other. Over a period of 6 h, she pumps a total of 1325 gal. Assume both pumps operated as rated. How long is each in operation.
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
o+t=6
180*o+250*t=1325
first (o) was used for 2.5 hours
the second (t) was used for 3.5 hours