Question

The speed of a boat in still water is 7 km/hr and speed of current is 4 km/hr. If time taken to cover a certain distance upstream is 22 hours, then how long will the boat take to cover the same distance downstream?

A 6 hrs Correct Answer Incorrect Answer
B 5 hrs Correct Answer Incorrect Answer
C 2 hrs Correct Answer Incorrect Answer
D 4 hrs Correct Answer Incorrect Answer
E None of these Correct Answer Incorrect Answer

Solution

Total distance = 22 × (7 – 4) = 66 km Required time = 66/(7 + 4) = 6 hrs

Practice Next
×
×