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Riddle: It takes ten men ten hours to build a certain wall. How long does it take five men to build the same wall?

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Riddle: It takes ten men ten hours to build a certain wall. How long does it take five men to build the same wall?
posted Sep 9, 2014 by Sandeep Bedi

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3 Answers

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No time.........................as the wall is already Built.....................

answer Mar 3, 2015 by Varghese Anthony
0 votes 
20 hours

1 wall/10 men=1/10 wall per man
1/10 wall per man/10 hours=1/100 wall per man per hour
5 men x 1/100 wall per man per hour=5/100 or 1/20 wall per hour
1 wall/ 1/20th wall per hour =20 hours per wall
☺☺☺☺

answer Jan 15, 2018 by anonymous
–2 votes

I think 20 Hours ?

answer Sep 9, 2014 by Muniprasad



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