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Ranjeet starts his journey to a certain place by car at 9 a.m. andreaches the place at 1 p.m., if he drives the car at a speed of 30 km/hr.By how much should he increase the speed so that he can reach theplace by 12 noon

Question

Ranjeet starts his journey to a certain place by car at 9 a.m. andreaches the place at 1 p.m., if he drives the car at a speed of 30 km/hr.By how much should he increase the speed so that he can reach theplace by 12 noon

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Solution

First, let's calculate the total distance Ranjeet travels.

He starts at 9 a.m. and reaches at 1 p.m., so the total time taken is 4 hours.

Given that his speed is 30 km/hr, the total distance he travels is Speed x Time = 30 km/hr x 4 hr = 120 km.

Now, if he wants to reach by 12 noon, he has only 3 hours (from 9 a.m. to 12 noon).

To find out the new speed, we use the formula Speed = Distance/Time.

So, the new speed = 120 km / 3 hr = 40 km/hr.

Therefore, Ranjeet should increase his speed by 40 km/hr - 30 km/hr = 10 km/hr.

This problem has been solved

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