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A train has to cover a distance of 90 km in 15 hours. If it covers half the journey in 4/5th of the time, the speed to cover remaining distance in the time left has to be
- a)10 km/hr
- b)20 km/hr
- c)8 km/hr
- d)15 km/hr
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
A train has to cover a distance of 90 km in 15 hours. If it covers hal...
GIVEN:
Total Distance = 90 km
Total Time = 15 hours
FORMULA USED:
Speed = Distance/Time
CALCULATION:
4/5th of the time = 15 × 4/5 = 12 hours
Now, remaining distance = 90 - 45 = 45 km
Remaining time = 15 - 12 = 3 hours
Average speed to cover the distance of 45 km will be 45/3 = 15 km/hr.
Most Upvoted Answer
A train has to cover a distance of 90 km in 15 hours. If it covers hal...
Understanding the Problem:
The train has to cover a total distance of 90 km in 15 hours. It covers half the journey in 4/5th of the time, which means it covers 45 km in 12 hours.
Calculating the remaining distance and time:
The remaining distance to cover is 90 km - 45 km = 45 km. The time left to cover this distance is 15 hours - 12 hours = 3 hours.
Calculating the speed required:
To cover the remaining 45 km in 3 hours, we need to find the speed. Speed = Distance/Time. So, Speed = 45 km / 3 hours = 15 km/hr.
Therefore, the speed to cover the remaining distance in the time left has to be 15 km/hr, which corresponds to option 'D'.
The train has to cover a total distance of 90 km in 15 hours. It covers half the journey in 4/5th of the time, which means it covers 45 km in 12 hours.
Calculating the remaining distance and time:
The remaining distance to cover is 90 km - 45 km = 45 km. The time left to cover this distance is 15 hours - 12 hours = 3 hours.
Calculating the speed required:
To cover the remaining 45 km in 3 hours, we need to find the speed. Speed = Distance/Time. So, Speed = 45 km / 3 hours = 15 km/hr.
Therefore, the speed to cover the remaining distance in the time left has to be 15 km/hr, which corresponds to option 'D'.
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A train has to cover a distance of 90 km in 15 hours. If it covers half the journey in 4/5thof the time, the speed to cover remaining distance in the time left has to bea)10 km/hrb)20 km/hrc)8 km/hrd)15 km/hrCorrect answer is option 'D'. Can you explain this answer?
Question Description
A train has to cover a distance of 90 km in 15 hours. If it covers half the journey in 4/5thof the time, the speed to cover remaining distance in the time left has to bea)10 km/hrb)20 km/hrc)8 km/hrd)15 km/hrCorrect answer is option 'D'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about A train has to cover a distance of 90 km in 15 hours. If it covers half the journey in 4/5thof the time, the speed to cover remaining distance in the time left has to bea)10 km/hrb)20 km/hrc)8 km/hrd)15 km/hrCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A train has to cover a distance of 90 km in 15 hours. If it covers half the journey in 4/5thof the time, the speed to cover remaining distance in the time left has to bea)10 km/hrb)20 km/hrc)8 km/hrd)15 km/hrCorrect answer is option 'D'. Can you explain this answer?.
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