25 men finish a work in 10 days.20
men will finish it in.... days.
Answers
Answer:
In the first 10 days, 25×10=250 'man-days. ... For the next 10 days there are only 20 men. The amount of work completed is: 20×10=200 'man-days'. There are then 15 men left to complete the remaining amount of work
Step-by-step explanation:
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Answer:
We are working with inverse proportion where, as the number of people decreases, the time taken to finish a task will increase.
Find the constant first.
x × y=k
The total task requires
25×20=500 'man-days'
In the first 10days,
25×10=250'man-days.', which means that the task is half completed.
For the next 10days there are only 20men.
The amount of work completed is:
20×10=200'man-days'.
There are then 15men left to complete the remaining amount of work.
500−250−200=50 'man-days'
The work can be completed in:
50/15=3(1/3)days
The total time taken is therefore
10+10+313days
The work will be completed on the 24th day.