SOLUTION: if sally paints a house in 4 hours and john paints the same house in 6 hours how long will it take for them both to paint the house
Algebra.Com
Question 219587: if sally paints a house in 4 hours and john paints the same house in 6 hours how long will it take for them both to paint the house
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Let 
represent the number of hours it takes Sally to paint the house. Let 
represent the number of hours it takes John to paint the house.
If Sally can paint the house in hours, she can paint 
of the house in one hour. Likewise, John can paint 
of the house in one hour. So given both working together, the house will get painted at a rate of:
of the house per hour.
Therefore the entire house will be painted in:
hours.
Just plug in the values you were given and do the arithmetic.
John
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