f a boat goes downstream 72 miles in 3 hours and upstream 60 miles in 6 hours, the rate of the river and the rate of the boat in still water respectively are ________?

Answer 1

Let V_b = velocity of the boat

V_c = velocity of the current

In general, Velocity = Distance/Time

Then (V_b + V_c) = 72/3 = 24

(V_b - V_c) = 60/6 = 10

Solving Simutaneously, we find that V_b = 17 miles/hr

V_c = 7 miles/hr