A motorboat travels 260 kilometers in 5 hours going upstream and 352 kilometers in 4 hours going downstream. What is the rate of the boat in still water and what is the rate of the current?

Answer 1

260 = 5(b-c)

52 = b-c

352 = 4(b+c)

88 = b+c

140 =2b

b = 70 kph = boat speed in still water

c = 18 kph = current speed