A body covers one-third of the total distance with speed v1. For the remaining distance it travels for half of the time with speed v2 and another half of the time with the speed v3. Find its avg speed if the avg speed is: nv1(v2 + v3)/4v2 + v2 + v3
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A body covers one-third of the total distance with speed v1. For the remaining distance it travels for half of the time with speed v2 and another half of the time with the speed v3. Find its avg speed if the avg speed is: nv1(v2 + v3)/4v2 + v2 + v3
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