SOLUTION: Neil can paint a 3 by 3 meter room in 6 3/4 hours,whereas Den can do the job in 4 1/2 hours. If they are both hired to do job, then how many hours will it take for them to finish p

Question 1067097: Neil can paint a 3 by 3 meter room in 6 3/4 hours,whereas Den can do the job in 4 1/2 hours. If they are both hired to do job, then how many hours will it take for them to finish painting the room?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Add their rates of painting to get their
rate painting together
Call the room to be painted [ 1 job ]
---------------------------------
Neil's rate:
[ 1 job ] / [ 6.75 hrs ]
Den's rate:
[ 1 job ] / [ 4.5 hrs ]
Let their rate painting together =
[ 1 job ] / [ t hrs ]
-------------------------------

Multiply both sides by

Painting together, it will take them 2.7 hrs

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