SOLUTION: I really Need Help With My Grade 9 Algebraic Equations and its for 20 points in every question : 1. Ben builds the walls of a house in 20 days. Sean can do the same job in five

SOLUTION: I really Need Help With My Grade 9 Algebraic Equations and its for 20 points in every question : 1. Ben builds the walls of a house in 20 days. Sean can do the same job in five

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Question 739745: I really Need Help With My Grade 9 Algebraic Equations and its for 20 points in every question :
1. Ben builds the walls of a house in 20 days. Sean can do the same job in five days less than Ben. If they work together, how many days would it take them to complete a house?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
one question per entry and no similar problems. limit five per day.
1/20+1/15=1/x
x=60/7
x = 8.5714 days
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