A person has to cover a distance of 600 km in 10 hours by car . If he covers…
2024
A person has to cover a distance of 600 km in 10 hours by car . If he covers 1/3 of the journey in 3/5th time . What should be the speed to cover the remaining distance in the time left ?
- A.
90 km/hr
- B.
100 km/hr
- C.
120 km/hr
- D.
80 km/hr
Attempted by 9 students.
Show answer & explanation
Correct answer: B
Answer: 100 km/h
Total distance = 600 km; total time = 10 hours.
Distance covered in the first part = (1/3) × 600 = 200 km.
Time used for the first part = (3/5) × 10 = 6 hours.
Remaining distance = 600 − 200 = 400 km.
Remaining time = 10 − 6 = 4 hours.
Required speed = remaining distance / remaining time = 400 / 4 = 100 km/h.
Therefore, the car should travel at 100 km/h to cover the remaining distance in the time left.