a car running at 45 kilometres per hour takes 6 hours to cover a journey at what speed must it travel to complete the journey in 5 hours?
Answers
Answer:
54 km.hr
Step-by-step explanation:
45 km/hr for six hours means you went 45 * 6 = 270 kilometers.
270 kilometers in five hours means you have to go 270/5 = 54 km.hr
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The speed of the car must have to be 54 km/h to complete the journey in 5 hours.
Explanation:
Case-1:
It is given that,
The speed of the care = 45 km/h
Time taken to cover the journey = 6 hours.
Hence,
Total distance covered = Speed × Time
= (45 × 6) km
= 270 km
∴ During the journey total distance covered by the care is 270 km.
Case-2:
Total distance covered by the car = 270 km
Time = 5 hours
Speed = Distance/Time
= (270/5) km/h
= 54 km/h
∴ The speed of the car must have to be 54 km/h to complete the journey in 5 hours.
#answerwithquality
#BAL