12 kmph
13 kmph
14 kmph
15 kmph
A boat covers a certain distance downstream in 4 h but takes 6 h to return upstream to the starting point. If the speed of the stream is 2 km/h, find the speed of the boat in still water.
A boat having a length 3 m and breadth 2 m is floating on a lake. The boat sinks by 1 cm when a man gets on it. The mass of the man is:
A boat is rowed downstream at 16.5 km/hr and upstream at 9.5 km/hr. The speed of the stream is
A boat running downstream covers a distance of 16 km in 2 hours while for covering the same distance upstream, it takes 4 hours. What is the speed of the boat in still water?
A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the water current respectively?
A boat takes 90 minutes less to travel 36 miles downstream than to travel the same distance upstream. If the speed of the boat in still water is 10 mph, the speed of the stream is:
A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water?
A boatman goes 3km against the current of stream in 1hr and goes 2km along the current in 20 minutes. How long will he take to go 6km in stationary water
A book consist of 30 pages, 25 line on each page and 35 characters on each line. If this content is written in another note book consisting 30 lines and 28 characters per line then the required no. of pages will how much percent greater than previous pages?
A book seller sells a book at a profit of 10% . If he had bought it at 4% less and sold it for Rs. 6 more. He would have gained 18 3/4% . The cost price of the book is = ?
