Login / Signup

Question

If the sum of upstream and downstream speed is 20 km/hr and the speed of the current is 5 km/hr. Then find time taken to cover 45 km in downward?

A 2 hrs

B 3 hrs

C 4 hrs

D 5 hrs

Practice Next

More Boats and streams Questions

A ship requires 9 hours to travel a distance of 216 km downstream and 210 km upstream. If the ratio of the ship's speed in calm waters to the speed of the ...
A boat can cover 188 km in downstream in 4 hours and 140 km in upstream in 7 hours. Find the speed of boat in still water.
If the sum of upstream and downstream speed is 20 km/hr and the speed of the current is 5 km/hr. Then find time taken to cover 45 km in downward?
A boat can cover 220 km in downstream in 11 hours and 126 km in upstream in 18 hours. Find the speed of boat in still water
The time taken by a boat to travel a certain distance downstream is in the ratio 4:5 compared to the time taken to travel the same distance upstream. Addit...
The ratio of downstream speed to upstream speed of a boat is 5:3. If the boat can cover 160 km in still water in 10 hours, then find the difference between...
A boat can travel 15 km upstream and 21 km downstream in 3 hours. Find the speed of the boat in still water if the speed of the stream is 1.5 km/h.
The speed of the boat in still water is 9 km/hr and the speed of the stream is 6 km/hr. A boat goes 90 km downstream with its usual speed but at the time o...
A captain can navigate a ship at a speed of 5 km/hr in calm waters. With a current moving at a speed of 3 km/hr, he takes 12 hours longer to travel 'd' km ...
Speed of a boat in still water is 9 km/hr. It goes 12 km downstream and comes back to the starting point in three hours. What is the speed of water in the ...

Relevant for Exams:

EMRS Hostel Warden

Hey! Ask a query

ask-question