A motor boat whose speed is 15 km/hour in still water goes 30 km downstream and comes back in a total time of 4 hours 30 minutes. Find the speed of the stream.

A motor boat whose speed is 18 km/hr in still water takes 1 hour more to go 24 km upstream than to return downstream to the same spot. Find the speed of the stream.

The speed of a boat in still water is 10 km/hr. If it can travel 26 km downstream and 14 km upstream in the same time, find the speed of the stream.

A car travels 4 km in 3 minutes. Find the speed of car in cms^-1

A boat goes 25 km upstream and 33 km downstream in 8 hours. It can also go 40 km upstream and 77 km downstream in 15 hours. Find the speed of the stream and that of the boat in still water.

A boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours, it can go 40 km upstream and 55 km downstream. Find the speed of the stream and that of the boat in still water.

A boat can go 20 km upstream and 30 km downstream in 3 hours. It can go 20 km downstream and 10 km .upstream in 1 2/3 hrs. Find the speed of the boat in still water and speed of stream.

Form the pair of linear equations in the following problems and find their solutions (if they exist) by any algebraic method :-Places A and B are 80 km apart from each other on a highway. A car starts from A and another from B at the same time. If they move in the same direction they meet in 8 hours , and if they move in opposite direction, they meet in 1 hour and 20 minutes respectively. Find the speed of the cars.

A train covers a distance of 90 km at a uniform speed. Had the speed be 15 km/ hour more, it would have taken half an hour less for the journey. Find the original speed of the train.

A man rowing at the rate of 5 km per hour in still water takes thrice, as much time in going 40 km up the river as in going 40 km down. Find the rate at which the river flows.