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  • Question
  • M can complete a piece of work in 10 days. N is 33.33% less efficient than M. calculate the number of days required to both to complete the work?


  • Options
  • A. 6 days
  • B. 8 days
  • C. 11 days
  • D. 13 days

  • Correct Answer
  • 6 days 

    Explanation

    M = 10 days

    The ratio of efficiency of M & N are 3 : 2

    Hence, the time rquired for N alone = 15 days

    => Required time taken t=by both to complete the work = M x N / M + N 

    = 10 x 15/ 10 + 15

    = 150/25

    = 6 days.

  • Tags: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO

    More questions

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      If x = ?3 + ?2 , then the value of (x + 1/x) is

    • Options
    • A. 2
    • B. 3
    • C. 2?2
    • D. 2?3
    • Discuss
    • 2. 
      The banker's gain on a certain sum due 2 1/ 2 years hence is 2/23 of the banker's discount on it for the same time and at the same rate. Find the rate percent?

    • Options
    • A. 5%
    • B. 4%
    • C. 8%
    • D. 6%
    • Discuss
    • 3. 
      A man 2 m high, walks at a uniform speed of 6 m/min away from a lamp post, 5 m high. Find the rate at which the length of his shadow increases .

    • Options
    • A. 4 m/min
    • B. 8 m/min
    • C. 9m/min
    • D. 14 m/min
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    • 4. Ravi and Kumar are working on an assignment. Ravi takes 6 hours to type 32 pages on a computer, while Kumar takes 5 hours to type 40 pages. How much time will they take, working together on two different computers to type an assignment of 110 pages?

    • Options
    • A. 7 hours 30 minutes
    • B. 8 hours
    • C. 8 hours 15 minutes
    • D. 8 hours 25 minutes
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    • 5. 
      The highest score in an inning was 3/11 of the total score and the next highest was 3/11 of the remainder. If the score differ by 18, find the total score.

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    • A. 244
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    • C. 294
    • D. 255
    • Discuss
    • 6. A is two years older than B who is twice as old as C. If the total of the ages of A, B and C be 27, then how old is B?

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    • C. 9
    • D. 10
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    • C. 19
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    • 8. 
      If a 2 + b 2 = 234 and ab = 108, find the value of (a + b) / (a - b).

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    • Options
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      11
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