Question
The wheel of an engine 5 (1/9) meters in circumference
makes five revolutions in 4 seconds. Find the speed of the train in km per hour.Solution
5 revolution = 4 seconds Then, 1 revolution = 4/5 seconds Speed = Distance/Time = [(46 × 5 )/(9 × 4)] × (18/5) = 23 km/hr
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