A man covers the first 210 km of a journey at 60 km h and the next 198 km at 66 mm The average speed...........

Quantitative Aptitude (CPO) Time & distance

A man covers the first 210 km of a journey at 60 km/h and the next 198 km at 66 mm. The average speed for the whole journey is:

This questions was previously asked in

SSC CPO 15th-March-2019-Shift-2

64 km/h

63 km/h

62.8 km/h

68.5 km/h

- First part of the journey: 210 km at 60 km/h.

- Time taken = Distance / Speed = 210 km / 60 km/h = 3.5 hours.

- Second part of the journey: 198 km at 66 km/h.

- Time taken = Distance / Speed = 198 km / 66 km/h = 3 hours.

- Total distance = 210 km + 198 km = 408 km.

- Total time = 3.5 hours + 3 hours = 6.5 hours.

- Average speed = Total distance / Total time = 408 km / 6.5 hours ˜ 62.77 km/h.

- Rounded to one decimal place, it is approximately 62.8 km/h.

Option 3: 62.8 km/h is the correct answer.

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