Question

10 persons begin to work together on a job, but after some days, 4 persons leave. As a result, the job, which could have been completed in 40 days, was completed in 50 days. How many days after commencement of the work did the four persons leave?

A 25 Correct Answer Incorrect Answer
B 24 Correct Answer Incorrect Answer
C 30 Correct Answer Incorrect Answer
D 20 Correct Answer Incorrect Answer

Solution

The correct answer is A

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