One fourth of a journey is covered at the rate of 50 km/h, one third at...
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One fourth of a journey is covered at the rate of 50 km/h, one third at the rate of 60 km/h and the rest at the rate of 100km/h. Find the average speed for the whole journey. 1800 1. km/h 63 1800 km/h 53 3600 3. km/h 53 360 4. km/h 53 5. None of these 2. One fourth of a journey is covered at the rate of 50 km/h, one third at the rate of 60 km/h and the rest at the rate of 100km/h. Find the average speed for the whole journey. 1800 1. km/h 63 1800 km/h 53 3600 3. km/h 53 360 4. km/h 53 5. None of these 2.
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