Question

A boat takes 3 hours to travel from place M to N downstream and back from N to M upstream. If the speed of the boat in still water is 4 km/hr, what is the distance between the two places?

Options

• 8km

• 12km

• 6km

• Data inadequate

Answer 1

Let the distance between M and N be d.
Let the speed of the current in still water be x km/hr respectively.
Now, `d/( 4 + x ) + d/(4 - x) = 3`
Now in above equation we have one eqaution and two variables.
Hence can't be determined.
So, option Data inadequate is the correct answer.