Two cars start from the same point and travel in the same direction. If one car moves at a speed of 55 km/h and the other at a speed of 72 km/h, how far apart will they be after 3 hours?
Given:
Speed of the first car = 55 km/h
Speed of the second car = 72 km/h
Time of travel = 3 hours
Direction of travel = Same direction
Formula Used:
Relative Speed (Same Direction) =
Distance = Relative Speed × Time
Solution:
Calculate the relative speed of the two cars.
Relative Speed = 72 - 55
Relative Speed = 17
Calculate the distance separating them after 3 hours.
Distance = 17 × 3
Distance = 51
Final Answer
So the correct answer is (d)
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90 Mins English English100 Questions100 Marks90 Mins English English100 Questions100 Marks90 Mins EnglishTwo cars start from the same point and travel in the same direction. If one car moves at a speed of 55 km/h and the other at a speed of 72 km/h, how far apart will they be after 3 hours?
Rajeev starts from A to B at 6:00 AM at a speed of 60 km/hr. After 2 hours, Suresh starts from B towards A at a speed of 80 km/hr. The distance between A and B is 750 km. At what time will they meet?
What time it will be 25200 seconds after 1pm?
Sudha and Kavitha start moving on a bicycle towards each other at 5 am with the speeds of 14 kmph and 16 kmph respectively. They were 45 km apart at the starting point for both. At what time would they meet?
A man walks to a viewpoint and returns to the starting point by his car maintaining a constant speed and thus, takes a total time of 4 hours 45 minutes. He would have gained 2 hours by driving both ways. How long would it have taken for him to walk both ways with the same walking speed?
A 145 m long train crosses a man walking at a speed of 9.5 km/h in the opposite direction in 30 seconds. What is the speed (in km/h) of the train ?
A bus cover 320 km distance in 5 hours, and speed of a car 3/8 of the speed of bus. Find the ratio of distance cover by bus in 6 hours to distance cover by car in five hours?
Two cars A and B started from point X & Y respectively, and the distance between these two points is 660 km. Both cars started at 10 AM and meet at 3 PM. If speed of car A is 12 km/hr more than that of B, then find the speed of car A (in km/hr)?
From a taxi stand, two cabs start at a speed of 74 km/hr at an interval of 28 minutes, both cabs travelling in the same direction. A man coming in the opposite direction towards the taxi stand meets the cabs at an interval of 10 minutes. Find the speed (in km/hr) of the man.
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Suggested Test Series
Two cars start from the same point and travel in the same direction. If one car moves at a speed of 55 km/h and the other at a speed of 72 km/h, how far apart will they be after 3 hours?
Rajeev starts from A to B at 6:00 AM at a speed of 60 km/hr. After 2 hours, Suresh starts from B towards A at a speed of 80 km/hr. The distance between A and B is 750 km. At what time will they meet?
What time it will be 25200 seconds after 1pm?
Sudha and Kavitha start moving on a bicycle towards each other at 5 am with the speeds of 14 kmph and 16 kmph respectively. They were 45 km apart at the starting point for both. At what time would they meet?
A man walks to a viewpoint and returns to the starting point by his car maintaining a constant speed and thus, takes a total time of 4 hours 45 minutes. He would have gained 2 hours by driving both ways. How long would it have taken for him to walk both ways with the same walking speed?
A 145 m long train crosses a man walking at a speed of 9.5 km/h in the opposite direction in 30 seconds. What is the speed (in km/h) of the train ?
A bus cover 320 km distance in 5 hours, and speed of a car 3/8 of the speed of bus. Find the ratio of distance cover by bus in 6 hours to distance cover by car in five hours?
Two cars A and B started from point X & Y respectively, and the distance between these two points is 660 km. Both cars started at 10 AM and meet at 3 PM. If speed of car A is 12 km/hr more than that of B, then find the speed of car A (in km/hr)?
From a taxi stand, two cabs start at a speed of 74 km/hr at an interval of 28 minutes, both cabs travelling in the same direction. A man coming in the opposite direction towards the taxi stand meets the cabs at an interval of 10 minutes. Find the speed (in km/hr) of the man.
