If Acan dopart of a work in one day, then he can finish the whole work in days.
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The efficiency is the amount of work that a person can do in some certain time. For example, consider the following example:
Example 2: What is the efficiency of a person who finishes his job in 5 days?
Answer: As per the question, the number of days this person takes to complete the work = 5
Therefore we can say that he does 1/5th of the work per day. This when we convert it into percentage = 100/5 = 20%. Therefore, his efficiency is 20%.
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