Speed of water when speed of downstream and upstream are given

Speed of boat in still water when speed of downstream and upstream are given.

The difference between downstream speed and upstream speed is 3 km/h and the total time taken during upstream and downstream is 3 hours. What is the downstream speed, if the downstream and upstream distance are 3 km each?

The speed of a boat in upstream is 2/3 that of downstream. Find the ratio of speed of boat in still water and to the average speed of boat in downstream and upstream?

What is upstream speed when speed of boat in still water and speed of stream are given

What is downstream speed when speed of boat in still water and speed of stream are given

The speed of boat upstream and speed of boat downstream are 7 km/h and 13 km/h, respectively. Find the speed of stream and speed of boat in still water.

Ram travels 12 miles downstream and upstream. It takes 6 hours more to return than to go downstream. If he doubles his speed and covers the same distance of 12 miles downstream and upstream then it takes 1 hour more to go upstream than to go down stream. Find the speed of stream.