a train takes 3 hours to reach a destination by travelling at a speed of 90 kilometre per hour how long will it take the train when it travels at the speed of 120 kilometre per hour
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Step-by-step explanation:
•••••••5 hours because 3--------90•••••••••
•••••••• ?--------120•••••••••
••••••••do cross multiple••••••••
••••••••3×120/90=5••••••••
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