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Arithmetic Aptitude :: Time and Work

  1. Ronald and Elan are working on an assignment. Ronald takes 6 hrs to type 32 pages on a computer, while Elan takes 5 hrs to type 40 pages. How much time will they take, working together on two different computers to type an assignment of 110 pages?
  2. A.
    7 hrs 30 min
    B.
    8 hrs
    C.
    8 hrs 15 min
    D.
    8 hrs 25 min

  3. Sakshi can do a piece of work in 20 days. Tanya is 25% more efficient than Sakshi. The number of days taken by Tanya to do the same piece of work is?
  4. A.
    15
    B.
    16
    C.
    18
    D.
    25

  5. A can do a piece of work in 4 hours; B and C together can do it in 3 hours, which A and C together can do it in 2 hours. How long will B alone take to do it?
  6. A.
    8 hours
    B.
    10 hours
    C.
    12 hours
    D.
    24 hours

  7. A and B can do a work in 8 days, B and C can do the same work in 12 days. A, B and C together can finish it in 6 days. A and C together will do it in?
  8. A.
    4 days
    B.
    6 days
    C.
    8 days
    D.
    12 days

  9. A and B can do a work in 12 days, B and C in 15 days, C and A in 20 days. If A, B and C work together, they will complete the work in?
  10. A.
    5 days
    B.
    7 5/6 days
    C.
    10 days
    D.
    15 2/3 days

  11. A is 30% more efficient than B. How much time will they, working together, take to complete a job which A alone could have done in 23 days?
  12. A.
    11 days
    B.
    13 days
    C.
    20 3/17 days
    D.
    None of these

  13. A can finish a work in 18 days B can do the same work in 15 days. B worked for 10 days and left the job. In how many days, A alone can finish the remaining work?
  14. A.
    5
    B.
    5 1/2
    C.
    6
    D.
    8

  15. X and Y can do a piece of work in 20 days and 12 days respectively. X started the work alone and then after 4 days Y joined him till the completion of the work. How long did the work last?
  16. A.
    6 days
    B.
    10 days
    C.
    15 days
    D.
    20 days

  17. A can do a price of work in 30days while B can do it in 40 days. In how many days can A and B working together do it?
  18. A.
    70 Days
    B.
    42 ¾ days
    C.
    27 1/7 days
    D.
    17 1/7 days

  19. A and B can together do a price of work in 15 days. B alone can do it in 20 days. In how many days can A alone do it?
  20. A.
    30 days
    B.
    40 days
    C.
    45 days
    D.
    60days