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You travelled a distance of $210 km$ by car and the trip lasted $3$ hours. What is the average speed of your car?

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40 km

39 km

85 km

70 km

answer is D.

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Detailed Solution

The average speed of the car is

70 km

.
Given that, distance

D = 210 km

Time

t = 3 h

We know that,

speed = \frac{Distance covered}{time taken}

By putting given values,
Speed

= \frac{210}{3}

\Rightarrow

Speed

= 70 km

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