Going against the current, a boat takes 6 hours to make a 120-mile trip. When the boat travels with the current on the return trip, it takes 5 hours.
If x = the rate of the boat in still water and y = the rate of the current, which of the following expressions represents the rate of the boat going with the current?
x - y
x + y
xy

Question

Going against the current, a boat takes 6 hours to make a 120-mile trip. When the boat travels with the current on the return trip, it takes 5 hours.
If x = the rate of the boat in still water and y = the rate of the current, which of the following expressions represents the rate of the boat going with the current?
x - y
x + y
xy

anonymous · Answer

The boat's speed plus The current should be the resultant spees.
So it is x+y