Ishaan has to reach Kolkata which is 737 km away in 21 hours. His starting speed for 7 hours was 49 km/hr. For the next 184 km his speed was 46 km/hr. By what speed must he travel now so as to reach Kolkata in the decided time of 21 hours?
21 km/hr
The distance covered in 7 hours = 49 × 7 = 343 km. The distance covered in the next 184 km is fixed. The remaining distance = 737 - (343 + 184) = 210 km. Time remaining = 21 - 7 - (184 / 46) = 21 - 7 - 4 = 10 hours. Speed required = 210 / 10 = 21 km/hr.
Important Questions from Speed Time and Distance
The average speed of a train is 180% of the average speed of a car. The car covers a distance of 990 km in 15 hours. The time taken (in hours) by the train to cover the distance of 891 km is:
If Rohit can cover a distance of 1188 km in 22 hours, then what is the speed of Rohit?
A train is moving at 72 km/hrs. The distance covers in 15 minutes by the train is:
If Sonu is driving a car at a speed of 20 m/s, then in how much time Sonu will cover a distance of 936 km?
A person crosses a 1600 m long street in 4 min. What is his speed (in km/h)?
