Correct Answer - Option 2 : 3 km
Given:
Speed of boat in still water = 27 km/h
Speed of current = 9 km/h
Formula used:
Speed = Distance/ Time
m/sec = 5/18 × km/hr
Speed of boat upstream = Speed of boat in still water – Speed of stream
Calculation:
Speed of boat upstream = 27 – 9
⇒ Speed of boat upstream = 18 km/h
Converting km/ h into m/s
⇒ Speed of boat upstream in m/s = 5 m/s
⇒ Distance traveled by boat = (5 × 10) × 60
⇒ Distance traveled by boat = 3000 m
⇒ Distance traveled by boat = 3 km
∴ Distance travelled by boat is 3 km