Problema Solution
Susan can paint her living room in 2 hours, Her friend Jaime estimates it would take him 3 hours to paint the same room. If they work together, how log will it take them to paint Susan's living room?
Answer provided by our tutors
Susan's rate is 1/2 room per hour.
Jaime's rate is 1/3 room per hour.
Let 'x' represent the number hours they need to paint the room together.
Their together rate is 1/x room per hour.
1/2 + 1/3 = 1/x
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click here to see the equation solved for x
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x = 1.2 hr
x = 1 hr 0.2*60 min
x = 1 hr 12 min
They will need 1 hour and 12 minutes to paint Susan's room together.