SOLUTION: A mason can build a wall in 10 hours. An apprentice can build a wall in 15 hours. How long would it take them to build the wall if they worked together?
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Question 313993: A mason can build a wall in 10 hours. An apprentice can build a wall in 15 hours. How long would it take them to build the wall if they worked together?
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
1/10+1/15=1/x
(15+10)/10*15=1/x
25/150=1/x
1/6=1/x
x=6 hours ans. when they work together,
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