Question 723178: george can install new wiring for a computer in 3 hours. it takes pete 4 hours. how long will ot take if they work together Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Add their rates of working
( 1 job ) / ( 3 hrs ) + ( 1 job ) / ( 4 hrs ) = ( 1 job ) / ( t hrs )
Multiply both sides by hrs
Working together it will take them 1 hr and 43 min
