Total Journey is of 600 km. A bus travels first 120 km of trip at speed of 40 km per hour. What should be speed for next 480 km so that average speed is 60 km/hour?
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Let the time taken by bus for covering first 120 Km be t₁, time taken by bus for covering next 480 Km be t₂ and speed of bus for last 480 Km be 'v' Km/h
We know that,
So,
Now,
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