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Answer

The average speed in km per hour is shown by:

Average speed = Total distance travelled / Time taken in hours

Hence the time given is minutes, we need to first 

52 minutes = 52 / 60 hours = 0.87 hours

Therefore, Average speed is

Average speed = 64 km / 0.87 hours = 73.56 km/hr

that is, the average speed of the car was 73.56 km/hr.

Answer

Total distance travelled = 64 Km

Total time = 52 min

time in hr = 52/60 hr =0.86 hr

Speed = Total distance travelled / Total time

      = 64/ 52 x 60  or 64/ 0.86 = 73.85 km/hr

Answer
Average speed = 64×60÷52= 73.85km/hr
Answer

Ans. Average speed = 73.846 k/hr

Explanation: In 52 mins, the car covers 64 km. So, in 1 hr or 60 mins, it covers (64/52)*60 km = 73.846 km. (approx.) Thus its speed is 73.846 km/hr

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