RRB NTPC - Time and Distance :(25) MCQs with Answers

21.

A train of length 200 m can cross a man, sitting inside another train of length 100 m coming from opposite direction at speed of 25 m/sec, in 5 seconds. Find the speed of first train?

A.) 40 m/sec
B.) 20 m/sec
C.) 10 m/sec
D.) 35 m/sec

Time taken by the train to cross the man = 300/(x+25) = 5 or 'x' = 35 m/sec

22.

A 280 – meter – long train moving with an average speed of 108 km/h crosses a platform in 12 seconds. A man crosses the same platform in 10 seconds. What is the speed of the man?

A.) 5 m/s
B.) 8 m/s
C.) 12 m/s
D.) cannot be determined

Speed of thain = 108 km/hr = (108 x 5)/18 m/sec 30 m/sec
If the length of the platform be x meters, then
x + 280/12 = 30
x + 280 = 360
x = 3 = (360 - 280) = 80m
speed of man = 80/10 = 8m/sec

23.

A bus started its journey from Ramgarh and reached Devgarh in 44 minutes at its average speed of 50 km/hr. If the average speed of the bus is increased by 5km/hour, how much time will it take to cover the same distance?

A.) 40 minutes
B.) 38 minutes
C.) 36 minutes
D.) 31 minutes

Distance = (44/60) x 50 = (x/60) x 55
x = 40 minutes

24.

The average speed of a train is 1(3⁄7) the average speed of a car. The car covers a distance of 588 km in 6 hours. How much distance will the train cover in 13 hours?

A.) 1750km
B.) 1760km
C.) 1720km
D.) 1820 km

Speed of the car = 588/6 = 98 km/hr
Speed of train = (10/7) x 98 = 140 km/hr
Distance covered by the train in 13 hours = 140 x 13 = 1820 km

25.

The 200-metre train crosses a platform double its length in 36seconds. What is the speed of the train in km/hr?

A.) 60
B.) 48
C.) 64
D.) 66