Phase X Graduation Level 04-08-2022 Shift 1


Question 1

A bus during its journey travels 60 min at a speed of 80 km/h, another 90 min at a speed of 100 km/h and 4 hours at a certain speed. If the average speed of the bus during its whole journey is 70 km/h, what is the speed of the bus during the 4 hours?
अपनी यात्रा के दौरान एक बस 80 km/h की चाल से 60 मिनट तक चलती है, 100 km/h की चाल से 90 मिनट तक चलती है और एक निश्चित चाल से 4 घंटे तक यात्रा करती है। यदि अपनी पूरी यात्रा के दौरान बस की औसत चाल 70 km/h है, तो 4 घंटे के दौरान बस की चाल क्या थी?

Options

A

67.75 km/h

67.75 km/h

B

62.35 km/h

62.35 km/h

C

70.00 km/h

70.00 km/h

D

56.25 km/h

56.25 km/h


Solution:

Correct Answer:

D

56.25 km/h

56.25 km/h


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