SOLUTION: 10 men working 3 hrs a day can complete a wall in 8 days. How many men will be required to complete 3 wall of the same size in working 8 hrs a day?

Question 806193: 10 men working 3 hrs a day can complete a wall in 8 days. How many men will be required to complete 3 wall of the same size in working 8 hrs a day?
Found 2 solutions by josmiceli, richwmiller:
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
10 men do 1 wall in hrs
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Note that hrs
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1/5 as many men will take 5 times as long
to do 1 wall
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So, 2 men do 1 wall in hrs
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To do 3 walls in this time will take
3 times as many men, so
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6 men can complete 3 walls in 120 hrs,
or 15 days working 8 hrs a day

Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
10*3*8=240 work hours to finish one wall
3 walls would be 720
15*8=120 per wall so we need 2 men per wall so we need 3*2= 6 men
also
720/120=6

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