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Arun and Dinesh can complete a piece of work in 12 days and 20 days respectively. They both starts working together and one fourth of the work done by them in a day is destroyed at the end of the day. In how many days the work will be completed?
  • a)
    18 days
  • b)
    10 days
  • c)
    12 days
  • d)
    14 days
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Arun and Dinesh can complete a piece of work in 12 days and 20 days re...
GIVEN:
Arun can do a piece of work in 12 days
Dinesh can do a piece of work in 20 days
They start working together and 1/4th of the work was destroyed at the end of the day.
CALCULATION:
Work done by Arun and Dinesh in a day = 1/12 + 1/20 = (5 + 3)/60 = 8/60 = 2/15
Effective work done in a day = 2/15 × 3/4 = 1/10 
Thus, work will be completed in 10 days.
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Arun and Dinesh can complete a piece of work in 12 days and 20 days respectively. They both starts working together and one fourth of the work done by them in a day is destroyed at the end of the day. In how many days the work will be completed?a)18 daysb)10 daysc)12 daysd)14 daysCorrect answer is option 'B'. Can you explain this answer?
Question Description
Arun and Dinesh can complete a piece of work in 12 days and 20 days respectively. They both starts working together and one fourth of the work done by them in a day is destroyed at the end of the day. In how many days the work will be completed?a)18 daysb)10 daysc)12 daysd)14 daysCorrect answer is option 'B'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about Arun and Dinesh can complete a piece of work in 12 days and 20 days respectively. They both starts working together and one fourth of the work done by them in a day is destroyed at the end of the day. In how many days the work will be completed?a)18 daysb)10 daysc)12 daysd)14 daysCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Arun and Dinesh can complete a piece of work in 12 days and 20 days respectively. They both starts working together and one fourth of the work done by them in a day is destroyed at the end of the day. In how many days the work will be completed?a)18 daysb)10 daysc)12 daysd)14 daysCorrect answer is option 'B'. Can you explain this answer?.
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