Question

A speed boat travels at a rate of 20 km per hour in still water. It travels 55 km upstream the same time it travels 90 km downstream. What is the rate of current?
since time = distance/speed,

55/(20-x) = 90/(20+x)

Related Questions

A boat heads S 15 degrees E on a river that flows due west. the boat travels S 11 degrees W with a... A boat on a river travels downstream between two points, 70 mi apart, in one hour. The return trip a... In still water, a speed boat travels 5 times faster than the current of the river. If the speed boat... A boat moves at a speed of 15 km/h in still water. The river it is traveling in flows at a rate of 3...