Time and Work Questions and Answers

General Aptitude

Time and Work

    1) A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is :

  • A)1/4
  • B)1/10
  • C)7/15
  • D)8/15
Answer: D

    2) A can lay railway track between two given stations in 16 days and B can do the same job in 12 days. With help of C, they did the job in 4 days only. Then, C alone can do the job in:

  • A)9(1/5)days
  • B)9(2/5)days
  • C)9(3/5)days
  • D)10
Answer: C

    3) A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?

  • A)12 days
  • B)15 days
  • C)16 days
  • D)18 days
Answer: B

    4) A is thrice as good as workman as B and therefore is able to finish a job in 60 days less than B. Working together, they can do it in:

  • A)20 days
  • B)22(1/2)days
  • C)25 days
  • D)30 days
Answer: B

    5) A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help of C, they completed the work in 3 days. How much is to be paid to C?

  • A)Rs. 375
  • B)Rs. 400
  • C)Rs. 600
  • D)Rs. 800
Answer: B