Question

train can travel at 60 kmph when no wagons are attached to it. The speed of train decreases with every wagon attached to it and the decrease in speed is directly proportional to the square root of the no. of wagons attached. When 4 wagons are attached to it, the speed is reduced to 54 kmph. Find the maximum no. of wagons that can be attached for the train move.

Answer 1

Answer:

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