Question

20 men can do a work in 10 days how many days 5 men can do that work​

Answer 1

Step-by-step explanation:

2.5 days

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Answer 2

Step-by-step explanation:

if the number of men decreases the work increases. Therefore the above is an inverse proportion.

f×d^2=k,. when d=10 and f=20

Therefore 20×10^2=k. Therefore 20×100=2000

if d=5 then f=?

f×d^2=2000

Therefore f×5^2=2000

Therefore f×25=2000

Therefore. f=80