Question

a car covers a distance in 30 minutes with an average speed of 60 km per hour what should be the average speed to cover the same distance in 20 minutes​

Answer 1

Answer:

90 kmph.

Step-by-step explanation:

Average Speed of the car: 60 kmph.

Time taken by the car: 30 min→ 0.5 hours.

Distance Covered by the car:

$\fbox{distance = {speed} \times {time} }$

$60 \times 0.5$

$30 \: km$

Distance covered by the car: 30 km.

New time taken: 20 min→

$\frac{1}{3} hours$

Average Speed of the car:

$\fbox{speed \: = \frac{distance}{time} }$

$\frac{30}{ \frac{1}{3} }$

$\frac{30}{ {3}^{ - 1} }$

$30 \times 3$

$90 \: kmph$

Hence, the Required Average Speed of the car is 90 kmph to cover the same distance in 20 min.

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