SOLUTION: If it takes 6 men 4 days to dig a hole 3 metres deep, how long will it take for 10 men to dig a hole 7 metres deep?

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Question 1144061: If it takes 6 men 4 days to dig a hole 3 metres deep, how long will it take for 10 men to dig a hole 7 metres deep?
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39614)   (Show Source): You can put this solution on YOUR website!
r, the one-man digging rate













-

(number seems strange. Look for any mistakes in steps.)
Answer by ikleyn(52756)   (Show Source): You can put this solution on YOUR website!
.

From the first statement, the rate of work is   =  =  meter per one man per day.


Let the number of days is x.  Then the equation to find the unknown x is


     = 7,


which gives


    x =  =  =  days =  days = 5.6 days.    ANSWER


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Be aware (!) :   writing by @josgarithmetic is   WRONG  and  INCORRECT   from the first line to the end.

For your safety,  ignore his post.



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