A man can cover `17 1/2 km` in 5 hours. Find his speed in `m/s`

A cyclist covers 1.5 km in 5 minutes. Find his speed in km/hr.

A bus covers 128 km in 2 hours and a train covers 240 km in 3 hours. Find the ratio of their speeds.

A train travels (1445)/(2) km in (17)/(2) hours. Find the speed of the train in km/h.

The speed of a truck is (1)/(3) rd the speed of a train . The train covers 1230 km is 5 hours . What is the speed of the truck ?