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A car takes 3 hours to reach a destination by travelling at 60 km/h. How long will it take while travelling at 90 km/h?
- a)1 hour 30 minutes
- b)1 hour 40 minutes
- c)2 hours 40 minutes
- d)2 hours
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
A car takes 3 hours to reach a destination by travelling at 60km/h. Ho...
Speed of the car = 60 km/h. Time taken = 3 h
Speed is increased to 90 km/h.
Time taken is inversely proportional to speed. Let the time taken to cover the distance travelling at90 km/h be x h. Then,
Time taken is inversely proportional to speed. Let the time taken to cover the distance travelling at90 km/h be x h. Then,
Most Upvoted Answer
A car takes 3 hours to reach a destination by travelling at 60km/h. Ho...
To find out how long it will take to reach the destination while traveling at 90km/h, we can use the formula:
time = distance / speed
Given that the distance remains the same, we can assume it to be a constant value. Let's say the distance is 'd' km.
- Given information:
- Speed at which the car initially travels: 60km/h
- Time taken to reach the destination at this speed: 3 hours
We can calculate the distance using the formula:
distance = speed x time
Substituting the given values:
d = 60km/h x 3 hours
d = 180 km
Now, let's find out how long it will take to cover this distance at a speed of 90km/h.
- Speed of the car: 90km/h
- Distance to be covered: 180 km
Using the formula mentioned earlier:
time = distance / speed
time = 180 km / 90 km/h
time = 2 hours
Therefore, it will take 2 hours to reach the destination while traveling at 90km/h.
Hence, the correct answer is option 'D' - 2 hours.
time = distance / speed
Given that the distance remains the same, we can assume it to be a constant value. Let's say the distance is 'd' km.
- Given information:
- Speed at which the car initially travels: 60km/h
- Time taken to reach the destination at this speed: 3 hours
We can calculate the distance using the formula:
distance = speed x time
Substituting the given values:
d = 60km/h x 3 hours
d = 180 km
Now, let's find out how long it will take to cover this distance at a speed of 90km/h.
- Speed of the car: 90km/h
- Distance to be covered: 180 km
Using the formula mentioned earlier:
time = distance / speed
time = 180 km / 90 km/h
time = 2 hours
Therefore, it will take 2 hours to reach the destination while traveling at 90km/h.
Hence, the correct answer is option 'D' - 2 hours.
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Community Answer
A car takes 3 hours to reach a destination by travelling at 60km/h. Ho...
Distance=speed*time
=60*3
=180km
if speed =90 km/h
time =distance/speed
=180/90
=2 hours
=60*3
=180km
if speed =90 km/h
time =distance/speed
=180/90
=2 hours
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A car takes 3 hours to reach a destination by travelling at 60km/h. How long will it take while travelling at 90km/h?a)1 hour 30 minutesb)1 hour 40 minutesc)2 hours 40 minutesd)2 hoursCorrect answer is option 'D'. Can you explain this answer?
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