Question

If 5 men can do a work in 10 days and

10 men can do the same work in 5 days.

Which proportion is this ?​

Answer 1

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Step-by-step explanation:

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Answer 2

Step-by-step explanation:

First of all this is a question of time and work. The concept of time and work is as follows-

Suppose a man completes a work in n days then… one days work of that man is= 1/n.

So, now lets see the question.

5 men can finish a job in 10 days,

from the above we can say that,

According to the concept above,

One days work of 5 men= 1/10

Therefore, 1 man ,1 days work = 1/5*10 i.e = 1/50.

therefore, 10 men, 1 days work = 10/50 i.e 1*10/50.

Now, Time taken = 50/10= 5 days (answer).

NOTE- As per the concept if you complete a work in 3 days then one days work= 1/3.

and the time you took is 3 days( just the reciprocal of 1/3).