Question

A train covers a distance of 480 km at a uniform speed . If the speed had been 8 km per hour less than it would have 3 hours more to cover the same distance. Find the
usual speed of the train .

Answer 1

Answer:

usual speed: x

480/(x-8) - 480/x=3

x=40

480/32 - 480/40= 15-12=3