SOLUTION: If 8 men can plough a field in 9 hours, how long would it take 18 men at the same rate?
a. 20 1/4 hours
b. 19 hours
c. 10 hours
d. 4hours
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-> SOLUTION: If 8 men can plough a field in 9 hours, how long would it take 18 men at the same rate?
a. 20 1/4 hours
b. 19 hours
c. 10 hours
d. 4hours
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Question 945957: If 8 men can plough a field in 9 hours, how long would it take 18 men at the same rate?
a. 20 1/4 hours
b. 19 hours
c. 10 hours
d. 4hours Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! 8 men plough 1 field in 9 hrs
1/8 that number of men will take 8
times as long to plough 1 field
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1 man ploughs 1 field in 72 hrs
18 times as many men will take 1/18
of that time to plough 1 field
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18 men plough 1 field in 72/18 = 4 hrs
The answer is (d)
