Multiple choice

A man completes 9/12 of a job in 21 days. At this rate, how many more days will it take him to finish the job?

  1. 7

  2. 6

  3. 9

  4. 10

  5. 12
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Work done=9/12 Balance work=1-9/12=3/12 Less work,Less days 9/12 --->21 days 3/12--->x days Then (9/12) *x=(3/12) * 21 x=(3*12*21)/(12*9) x=7 days It is the correct answer.

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