Jane can paint a whole room in 8 hours by working alone. While Carlos can paint a whole room in 6 hours by working alone. If they work together, how long would it take for them to finish painting a whole room?
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Jane can paint a whole room in 8 hours by working alone. While Carlos can paint a whole room in 6 hours by working alone. If they work together, how long would it take for them to finish painting a whole room?
Let the time it takes both of them working together to finish the job be
. Then 
Taking the reciprocals of both sides, we have
Therefore, working together, it will take both of them about 3.43 days to paint a whole room.