Traveling downstream a certain boat went 21 mph. Traveling upstream it went only 5 mph. Find the speed of the boat in still water and the speed of the current.

Answer 1

speed of boat --- x
speed of current -- y

x+y = 21
x-y = 5

add the two equations, and continue

Answer 2

what does M grade mean making progress less than 70

Answer 3

Traveling downstream a certain boat went 21 mph. Traveling upstream it only went 1 mph. Findthe current and the speed of the boat if there were no current.

Answer 4

Traveling downstream a certain boat went 21 mph. Traveling upstream it only went 11 mph.