Time, Speed and Distance (Part-7)

Total Questions: 50

21. A covered a distance of 240 km at a certain speed. Had his speed been 8 km/h less, then the time taken would have been one hour more for covering the same distance. How much time (in hours) will he take to cover a distance of 480 km at his original speed? [SSC CGL Tier II (29/01/2022)]

Correct Answer: (b) 10
Solution:

22. The driver of a car, which is traveling at a speed of 75 km/h, locates a bus 80 m ahead of him, travelling in the same direction. After 15 seconds, he finds that the bus is 40 m behind the car. What is the speed of the bus (in km/h)? [SSC CGL Tier II (03/02/2022)]

Correct Answer: (d) 46.2
Solution:

Let the speed of bus = x km/h
According to the question,

23. An athlete runs 8 times around a circular field of radius 7 m in 3 minutes 40 seconds. His speed (in km/h) is: [SSC CGL Tier II (03/02/2022)]

Correct Answer: (c) 144/25
Solution:

24. The distance between two places A and B is 140 km. Two cars x and y start simultaneously from A and B, respectively. If they move in the same direction, they meet after 7 hours. If they move towards each other, they meet after one hour. What is the speed (in km/h) of car y if its speed is more than that of car x? [SSC CGL Tier II (03/02/2022)]

Correct Answer: (c) 80
Solution:

25. The speed of wind during a storm is 10⁵ mm per sec. How long (in seconds) will it take a dust particle suspended in air to travel 1 Km ? [SSC MTS 05/10/2021 (Morning)]

Correct Answer: (c) 10
Solution:

26. How much time (in seconds) does the earth take to rotate through an angle of 135 degrees about its axis ? [SSC MTS 5/10/2021 (Morning)]

Correct Answer: (c) 32400
Solution:

27. The speed of A is 20 km/h more than the speed of B. The time that A takes to travel a distance of 300km is 2 hours less than the time that B takes to travel a distance of 240km. What is the speed(in km/h) of A? [SSC MTS 06/10/2021 (Morning)]

Correct Answer: (d) 50
Solution:

28. A car covers a distance of 450 km at a certain uniform speed (in km/h). The number of hours it takes for the journey is 1/8 of the number representing the speed. The time taken (in hours) by the car to cover the distance is: [SSC MTS 06/10/2021 (Afternoon)]

Correct Answer: (d) 7½
Solution:

29. A car travels a distance of x km at a speed of 5⁵⁄₉ m/sec and returns at 5 m/sec to the starting point. If the total time taken by the car is 7⅗ hours, then the value of (x + 3) is: [SSC MTS 07/10/2021 (Evening)]

Correct Answer: (c) 75
Solution:

30. A bus moves from station A towards station B, which is at a distance of 189 km. An hour later a car, the ratio of whose speed with the bus is 3:2, starts from station A and moves towards station B. Find the speed of the bus (in km/h), if the car arrives at station B half an hour earlier than the bus. [SSC MTS 11/10/2021 (Morning)]

Correct Answer: (c) 42
Solution: