document.write( "Question 732913: PumP A, working alone, can fill a tank in 3 hours, and pump B can fill tthe same tank in 2 hours. If the tank is empty to start and pump a is switched on for 1 hour, after which pump b is also switched on and the two work together, how many minutes will pump b have been working by the time the pool is filled? \n" ); document.write( "
Algebra.Com's Answer #448124 by lynnlo(4176)![]() ![]() ![]() You can put this solution on YOUR website! \n" ); document.write( " |