if 10 persons can do a job in 20 days then in how many days 20 persons with twice efficiency can do the same job.
Answers
Answered by
11
10 X 20/20 = 10 Days
fk4693635:
i thik 5 days
Answered by
56
10 people can do the job in 20 days
⇒ 1 person will need 10 x 20 = 200 days
⇒ 1 day = 1/200 of the work
If a person is twice as efficient:
1 day = 1/200 x 2 = 1/100 of the work
Find the number of days needed for 20 people:
1 person = 1/100 of the work
20 people = 1/100 x 20 = 1/5 of the work
1/5 of the work = 1 day
5/5 of the work = 1 x 5 = 5 days
Answer: The 20 people will need 5 days to complete the work
yes you are right
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