1.

A train running at a speed of 80 km/h can cover a certain distance in 45 minutes. How long willit take to cover the same distance if its speed is increased by 10 k1.m/h?

Answer»

For this first find distanceHenceDistance=speed*timeDistance=80/60*45=60km..as 1hr=60minshenceIf speed increased by 10km/hr that is 90km/hrHence,Time=Distance /speed=60/90=0.66hr

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