4 people dig a trench in 3 hours how long would it take 9 people
Answers
Given : 4 people dig a trench in 3 hours
To find : how long would it take 9 people
Solution:
4 people dig a trench in 3 hours
=> total Work = number of people & Working hrs of people
=> Total work = 4 * 3
=> Total Work = 12 hrs
Let say 9 People will take T hrs to complete work
=> Total Work done = 9 * T hrs
Equating total Work
=> 9T = 12
=> T = 12/9
=> T = 4/3 hrs
9 people will take 4/3 hrs = 1 hr 20 minutes to dig a trench
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