Time and Work (Railway Maths) (Part – V)

Total Questions: 57

41. L does thrice as much work as M, and together they complete a piece of work in 12 days. In how many days L alone can complete the same work? [ALP Tier II 23/01/2019 (Afternoon) ]

Correct Answer: (b) 16
Solution:

42. B is twice as efficient as C and A is thrice efficient as B. If they are paid with a salary of Rs. 94,842 together, what is the salary received by A? [RPF Constable 18/01/2019 (Morning)]

Correct Answer: (d) Rs. 63,228
Solution:

43. B is twice as efficient as C and A is thrice as efficient as B. If both of them are paid a salary of Rs. 94,248, then how much is the wage to be received by A? [RPF Constable 19/01/2019 (Morning)]

Correct Answer: (b) Rs. 62,832
Solution:

44. Sharan and Mayukh, working together, can complete a task in 18 days. However, Mayukh works alone and leaves after completing one-third of the task. Then, Sharan takes over and completes the remaining work by himself. As a result, the duo could complete the task in 40 days. How many days would Sharan alone have taken to do the job if Mayukh had worked faster than Sharan? [RRB ALP 09/08/2018 (Afternoon)]

Correct Answer: (b) 45
Solution:

45. In a computer game, a builder can build a wall in ten hours while a destroyer can demolish such a wall completely in fourteen hours. Both, the builder and the destroyer were initially set to work together on level ground. But after 7 hours the destroyer was taken out. What was the total time (in hours) taken to build the wall? [RRB ALP 09/08/2018 (Afternoon) ]

Correct Answer: (d) 15
Solution:

46. Surya works 3 times as fast as Ramya and is able to complete a work in 40 days less than the number of days taken by Ramya. Find the time in which they can complete the work together. [RRB ALP 10/08/2018 (Afternoon) ]

Correct Answer: (d) 15 days
Solution:

47. A and B can complete a task in 12 days. However, A had to leave a few days before the task was completed and hence it took 16 days in all to complete the task. If A alone could complete the work in 21 days, how many days before the work getting over did A leave? [RRB ALP 10/08/2018 (Afternoon) ]

Correct Answer: (a) 7
Solution:

48. A and B together can complete a task in 12 days. However, if A works alone, completes half the job and leaves and then B works alone and completes the rest of the work, it takes 25 days in all to complete the work. If B is more efficient than A, how many days would it have taken B to do the work by herself? [RRB ALP 13/08/2018 (Morning) ]

Correct Answer: (b) 20
Solution:

49. Thirty men can do a piece of work in 16 days working 8 hrs a day. How many men are needed to complete another work, which is twice the first one, in 10 days working 12 hrs a day? The following are the steps involved in solving the above problem. Arrange them in sequential order. [RRB ALP 14/08/2018 (Morning) ]

Correct Answer: (c) CBAD
Solution:

50. A piece of work can be done by 16 men in 8 days working 12 hours a day. How many men are needed to complete another work, which is three times the first one, in 24 days working 8 hours a day? [RRB ALP 17/08/2018 (Morning) ]

Correct Answer: (d) 24 men
Solution: