A person covers a distance of 80 km at 20 km/h and another 120 km at 40 km/h. Find his average speed for the whole journey. MCQ with Answer and Explanation
A motorboat maps 32 km downstream in 2 hours and tracks the same upriver stretch upstream in 4 hours. Find the baseline speed of the boat hull in still water.
A motorboat tracks 48 km downstream in 3 hours and handles the same route upstream back to the origin line in 6 hours. Find the baseline speed of the boat hull in still water.
A passenger coach locomotive 120 meters long passes a clear roadside post marker in 6 seconds flat. Find the time needed to cross an extensions platform 240 meters long.
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