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  • A non-stop bus goes from one station to another station with a speed of 54km per hour. The same bus returns from the second station to the first station with a speed of 36km hr-1. find the average speed of the bus for the total journey

A non-stop bus goes from one station to another station with a speed of 54km per hour. The same bus returns from the second station to the first station with a speed of 36km hr-1. find the average speed of the bus for the total journey

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\\\\Average\ speed=\frac{2d}{\frac{d}{v_1}+\frac{d}{v_2}}=\frac{2v_1v_2}{v_1+v_2}\\\\=\frac{2\times15\times10}{25}=\frac{300}{25}=12m/s=43.2Km/h

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Safeer PP

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