Question
A boat takes 7 hours to cover 259 km upstream and 9 hours to cover 477 km downstream. Find the time taken by the boat to cover 645 km upstream and 660 km downstream if speed of boat in still water is increased by 4 km/h and speed of stream is decreased by 2 km/h.
More Boats and streams Questions
- A boat moves downstream at 45 km/h, which is (25/10) m/s faster than its upstream speed. If it covers (D + 24) km downstream and (D - 36) km upstream in a ...
- A man can row 7 km/hr in still water. If the speed of the current is 3 km/hr, it takes 6 hours more in upstream than in the downstream for the same distanc...
- A boy can swim in water with a speed of 10 km/hr in still water. If the speed of the stream is 4 km/hr, what will be the time taken by the boy to cover 70 ...
- The speed of a boat in still water is 50% more than the speed of the stream such that the boat takes 3 hours to cover 81 km downstream. If the speed of the...
- 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 to speed of boat in upstream is 7: 6. If the boat can travel 320 km in downstream in 4 hours, then find the time taken by th...
- A steamer covers 80 km in 5 hr. in still water. If the speed of the steamer in still water is 50% more than that of the stream, then time is required for t...
- A motor boat covers a certain distance downstream in a river in 5 hours. It covers the same distance upstream in 5 hours and 30 minutes. If the speed of wa...
- A man can row his boat with the stream at 14 km/h and against the stream in 8 km/hours. Find the rate of the stream.
- A boat takes 20 hours to cover 'n' km in still water. While traveling downstream, it takes 15 hours to cover (n - 50) km. If the speed of the boat in still...
Hey! Ask a query
Please enter email id
The email must be a valid email address.
Please enter Mobile Number
Please enter valid Mobile Number
Please enter your Doubt
Think You're Ready for RBI Grade B?
RBI Grade B 2026 Phase 1 Memory Based Paper
- 200 Questions with Detailed Solutions
- Section-wise Coverage (GA, English, Quant & Reasoning)