Q: I rowed against a steam flowing at 1.5 km/hr to a certain point and then turned back stopping 2 km short of the place from where I originally started. If the whole time occupied in rowing is 2 hrs 10 minutes and my uniform speed in still water is 4.5 km/hr, then find how far upstream did I go?
A: 5 km
Q: A Boat takes a total of 16 hours for travelling downstream from point A to point B and coming back point C which is somewhere between A and B. If the speed of the Boat in Still water is 9 Km/hr and the rate of the stream is 6 Km/hr, then what is the distance between A and C?
A: cannot be determined
Q: At his usual rowing rate, Rahul can travel 12 miles downstream in a certain river in 6 hours less than it takes him to travel the same distance upstream. But if he could double his usual rowing rate for his 24-mile round trip, the downstream 12 miles would then take only one hour less than the upstream 12 miles. What is the speed of the current in miles per hour?
A: 2 2/3 mph
Q: I rowed against a stream flowing at 1.5 km/hr to a certain point and then turned back, stopping 2 km short of the place from where I originally started. If the whole time occupied in rowing is 2 hrs 10 minutes and my uniform speed in still water is 4.5 km/hr, then find how far upstream did I go.
A: 5 km
Q: The current of a stream runs at 5 kmph. A motor launch goes 25 km upstream and back again to the starting point in 275/2 minutes. The speed of the motor launch in the absence of any current is
A: 22.8 Kmph
Q: A boat takes 46 hours to cover 480 km in downstream and 192 km in upstream and takes 52 hours to cover 192 km in downstream and 480 km in upstream.Find the speed of boat in still water.
A: 14 km/hr
Q: A boat can row 18 km downstream and back in 8 hours. If the speed of the boat is increased to twice its previous speed, it can row the same distance downstream and back in 3.2 hours. Find the speed of the boat in still water.
A: 6 km/hr
Q: There are two places A and B which are separated by a distance of 100 km. Two boats start from both places at the same time towards each other. If the slowest boat is going downstream then the other one is going upstream. If the speed of A and B are 12km/hr and 13km/hr respectively, find out after how much time will they meet each other.
A: 4 hrs
Q: The speed of a boat in still water is 40 kmph.The time taken by the boat to cover 240 km in upstream is 5 hours more than to cover the 420 km in downstream.Find the speed of the stream.
A: 20 kmph
Q: A boat running upstream takes 8 hours and 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 the speed of the water current respectively?
A: 8:3
Q: A motorboat went downstream for 28 km and immediately returned. It took the boat twice as long to make the return trip. If the speed of the river flow were twice as high, the trip downstream and back would take 672 minutes. Find the speed of the boat in still water and the speed of the river flow.
A: 9 km/h, 3 km/h
Q: A boat covers 40 km upstream and 90 km downstream in 5 hr. It can also cover 60 km upstream and 60 km downstream in 5 hr. The speed of the water current is
A: 5 km/hr
Q: A boat makes a return journey from point A to point B and back in 5 hours 36 minutes. One way it travels with the stream and on the return it travels against the stream. If the speed of the stream increases by 2 km/hr, the return journey takes 9 hours 20 minutes. What is the speed of the boat in still water? (The distance between A and B is 16 km.)
A: 7 km/hr
Q: Ram goes downstream with a boat to some destination and returns upstream to his original places in 6 hours. If the speeds of the boat in still water and the stream are 12km/hr and 5 km/hr respectively, then find the distance of the destination from the starting position.
A: 29.75 km
Q: Mr. Suresh can row to a place 48 km away and come back in 14 hours. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. The rate of the stream is?
A: 1 kmph
Q: A man can row 9 (1/3) kmph in still water and finds that it takes him thrice as much time to row up than as to row down the same distance in the river. What is the speed of the current?
A: 4 (2/3) km/hr
Q: A boat takes 120 min less to travel 30 km downstream than to travel the same distance upstream. If the speed of the boat in still water is 8 kmph then the speed of the stream is
A: 2 kmph
Q: A steamer running downstream covers a distance of 30 km in 2 hours. While coming back the steamer takes 6 hours to cover the same distance. If the speed of the current is half of that of the steamer, then find the speed of the steamer in kmph
A: 10 kmph
Q: A boat can cover 20 km upstream and 32 km downstream together in 3 hours. Also it can cover 40 km upstream and 48 km downstream together in 5 and half hours. What is the speed of the current?
A: 11 km/hr
Q: The speed of a boat in still water and the speed of the current is in a ratio of 4 : 3. If the difference between the distance covered by boat in 3 hours upstream and in 3 hours downstream is 54 km. Speed of boat in still water is
A: 12 kmph