Question

49. A car travels 30 km at a uniform speed 30 km/h and the next 30 km at a uniform
speed of 60 km/h. The average speed of the car is :
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Answer 1

Answer:

.......40kmph

Explanation:

.. time taken to cover first 30 km

= 30/30 = 1hr

.. time taken to cover 30 km

=30/60=1/2

=. 0.5hr

avg speed = total distance/ total time

avg speed= 30+30/1+0.5

avg speed= 60/1.5

avg speed= 40Kmph