Time Speed and Distance (Railway Maths) (Part – III)

Total Questions: 50

41. A man covers a certain distance between his house and his office on a scooter. At an average speed of 30 km/h, he is late by 10 min. However, at a speed of 40 km/h he reaches his office 5 min earlier. Find the distance between his house and his office. [RRB NTPC 27/01/2021 (Evening) ]

Correct Answer: (a) 30 km
Solution:

42. A 300m long train crosses an electric pole in 5 s. Find the speed of the train? [RRB NTPC 28/01/2021 (Morning) ]

Correct Answer: (d) 216 km/h
Solution:

43. A train passes two bridges of length 600 m and 200 m in 80 s and 40 s respectively. The length of the train is: [RRB NTPC 29/01/2021 (Morning)]

Correct Answer: (d) 200 m
Solution:

44. A car completes a journey in 18 h covering the first half of the journey at a speed of 40 km/h and the second half of the journey at a speed of 50 km/h. Find the distance of the journey? [RRB NTPC 29/01/2021 (Morning)]

Correct Answer: (a) 800 km
Solution:

45. Find the time taken by a 450 m long train travelling at the speed of 80 km/h to cross a platform of length 150 m. [RRB NTPC 30/01/2021 (Morning)]

Correct Answer: (b) 27 s
Solution:

Speed of train = 80 km/h
In 60 min distance travelled = 80 km Or,
In 3600 sec distance travelled = 80000 m
Or, In 36 sec distance travelled = 800 m
Time taken by train to complete 800 m
= 36 sec
800 m = 36 sec
(450 + 150 = 600 m) 600 m
= 36/800 × 600 = 27 sec

46. A man travelled a distance of 28 km in 8 h. He travelled partly by foot at a speed of 2 km/h and partly on bicycle at a speed of 6 km/h. What was the distance (in km) travelled on foot? [RRB NTPC 30/01/2021 (Evening)]

Correct Answer: (c) 10
Solution:

47. Parvez leaves his office everyday at 6 pm and reaches home at 7:30 pm. One day he left his office at 6 pm but travelled one fourth of the distance at 4/5 of the usual speed. At how many times his normal speed did Parvez travel the remaining part of the journey if he managed to reach home on time? [RRB NTPC 31/01/2021 (Morning)]

Correct Answer: (a) 12/11
Solution:

48. A started a journey at 1:00 p.m. at a speed of 40 km/h. B started from the same spot and in the same direction at 1:40 p.m. at a speed of 50 km/h. How many minutes will B take to catch up with A? [RRB NTPC 31/01/2021 (Evening)]

Correct Answer: (d) 160 min
Solution:

49. P can run 250 m in 25 s and Q can run the same distance in 30 s. By what distance is P ahead of Q after 4.5 s, if both start the race at the same time? [RRB NTPC 31/01/2021 (Evening)]

Correct Answer: (d) 7.5 m
Solution:

50. A car can go 150 km with 20 L of petrol. How far (in km) can it go with 30 L of petrol? [RRB NTPC 01/02/2021 (Morning)]

Correct Answer: (d) 225
Solution: