Question

What will be the distance between chennai and banglore? I took two hours more when i travel at 70kmph that at 60kmph?

Answer 1

Answer:

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Answer 2

The distance between Chennai and Bangalore is 840 km.

Explanation:

Speed is given by :

$v=\dfrac{d}{t}$

d is distance

t is time

Let distance between Chennai and Bangalore is x. The person took two hours more when i travel at 70 km/h that at 60 km/h.

Time when speed is 70 km/h is :

$t=\dfrac{x}{70}\\\\\x=70t\ .......(1)$

Time when speed is 60 km/h is :

$t+2=\dfrac{x}{60}\\\\x=60(t+2) .......(2)$

From equation (1) and (2) we get :

$70t=60t+120\\\\10t=120\\\\t=12\ h$

Put the value of t in equation (1) as :

$12=\dfrac{t}{70}\\\\x=840\ km$

So, the distance between Chennai and Bangalore is 840 km.

Learn more,

Speed, distance and time

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