If upstream speed is 22 km/hr and downstream speed is 34 km/hr, what is speed of boat in still water?
Answer & explanation
Correct answer: option 1
Let,
Speed of boat in still water - x
Speed of stream/current - y
Upstream speed i.e. x - y = 22 km/hr ------(1)
Downstream speed i.e. x + y = 34 km/hr -------(2)
Adding 2 equations:
x - y + x + y = 22 + 34
2x = 56
x = 28 km/hr