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

Total Questions: 57

31. X does half as much work as Y in 1/6 of time. If together they can complete a job in 10 days, how many days will Y take to complete it, when he works alone ? [RRB JE 02/06/2019 (Morning) ]

Correct Answer: (c) 40 days
Solution:

32. A man is capable of finishing a job in 12 days. But a boy can do only one-third of the work done by a man in a day. If the man earns Rs. 525 in one day, then what does the boy get for his work per day? [RRB JE 26/06/2019 (Morning) ]

Correct Answer: (c) Rs.175
Solution:

33. Two pipes P and Q fill a tank in 15 and 20 minutes respectively. They are both opened, but after 4 minutes, P is turned off. In what time from the start is the tank filled up ? [RRB JE 27/06/2019 (Evening) ]

Correct Answer: (d) 14 minutes 40 seconds
Solution:

34. P can do 2/5 part of some work in 10 days. If P and Q can do 1/3 part of the same work in 5 days, what is the ratio of their efficiencies ? [RRB JE 27/06/2019 (Evening) ]

Correct Answer: (c) 3 : 2
Solution:

35. A man, a woman and a boy can do work individually in 3, 4 and 12 days respectively. How many boys are to be employed to help 3 men and 4 women tofinish the work in 1/4 of a day? [RRB JE 28/06/2019 (Evening) ]

Correct Answer: (c) 24
Solution:

36. A can complete 25% of a work in 3 days and B can complete half of the same work in 18 days. If both of them work together, then in how many days can they complete the same work? [ALP Tier II 21/01/2019 (Afternoon) ]

Correct Answer: (c) 9
Solution:

37. If working together, A, B and C can complete a piece of work in 4 days. However, after starting the work, B left and A and C completed the remaining part of the work in 6 days. If B had to work alone, in how many days would it have taken him to complete the work? [ALP Tier II 21/01/2019 (Afternoon)]

Correct Answer: (d) 12
Solution:

38. A can do a piece of work in 15 days, while A and B together can do the same work in 7.5 days. How much time will B take to complete the same work alone? [ALP Tier II 21/01/2019 (Morning)]

Correct Answer: (c) 15 days
Solution:

39. A and B can do a work in 12 days, B and C can do the same work in 15 days, while A and C can do the same work in 36 days. In how many days will all the three together complete the same work? [ALP Tier II 21/01/2019 (Morning) ]

Correct Answer: (b) 11.25 days
Solution:

40. A alone can do a piece of work in 35 days and B alone can do it in 14 days. If they both work on it together for 5 days, how much work is left? [ALP Tier II 23/01/2019 (Morning) ]

Correct Answer: (d) half
Solution: