Bankers Adda is also known to be called as Easy Shortcuts adda.
Today we came back with a New Easy Shortcuts
Go through the Shortcut and if you have any doubts please contact bankers adda in the comment section.
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Easy Shortcut on Boats and Streams 2
1. The speed of the boat in still water is 10km/hr and the rate of the current is 3 km/hr. The distance travelled downstream in 12 minutes is ?
Solution : Speed downstream =(10+3)kmph= 13kmph
Distance travelled = 13*12/60 = 2.4 kmph
2. A man can row upstream at 5kmph and downstream at 15kmph .The speed of the stream is ?
Solution : Speed of the stream = 1/2 (15-5) = 5kmph
3. what is the speed of the boat in still water ?
(i)The speed downstream of the boat is twice the speed upstream.
(ii)The sum of the speeds of the boat , upstream and downstream is 12kmph
Solution : Let the speed of the boat be x km/hr . Then
i) Speed downstream = 2x km/hr
ii)Says, the speed of the boat in still water = (1/2*12) = 6km /hr
4. A man takes twice long to row a distance against the stream as to row the same distance in favour of the stream .the ratio of the speed of the boat in still water is ?
Solution : Let man's upstream be xkmph . then . his rate downstream =3x km/hr
(Speed in still water) : (Speed of stream ) = (2x+x/2) : (2x-x/2) =3x/2 : x/2 =3:1
5. A boat takes a total time three hours to travel downstreams from P to Q and the upstream back from Q to P. what is the speed of boat in still water ?
i)The speed of the river current is 1 km per hour
ii)The distance between P and Q is 4 km.
Solution : i) The speed of the current = 1km/hr
ii)PO =4km
let the speed of the boat in still water be x km/hr
4/(x+1) +4/(x-1) =3
Today we came back with a New Easy Shortcuts
Go through the Shortcut and if you have any doubts please contact bankers adda in the comment section.
Aptitude Quiz Banking Quiz Computer Quiz
Daily Quiz English Quiz GK Quiz
English Learning Tips Invention Quiz Reasoning Quiz
Interview Tips Abbreviations Dates to Remember
Easy Shortcut on Boats and Streams 2
1. The speed of the boat in still water is 10km/hr and the rate of the current is 3 km/hr. The distance travelled downstream in 12 minutes is ?
Solution : Speed downstream =(10+3)kmph= 13kmph
Distance travelled = 13*12/60 = 2.4 kmph
2. A man can row upstream at 5kmph and downstream at 15kmph .The speed of the stream is ?
Solution : Speed of the stream = 1/2 (15-5) = 5kmph
3. what is the speed of the boat in still water ?
(i)The speed downstream of the boat is twice the speed upstream.
(ii)The sum of the speeds of the boat , upstream and downstream is 12kmph
Solution : Let the speed of the boat be x km/hr . Then
i) Speed downstream = 2x km/hr
ii)Says, the speed of the boat in still water = (1/2*12) = 6km /hr
4. A man takes twice long to row a distance against the stream as to row the same distance in favour of the stream .the ratio of the speed of the boat in still water is ?
Solution : Let man's upstream be xkmph . then . his rate downstream =3x km/hr
(Speed in still water) : (Speed of stream ) = (2x+x/2) : (2x-x/2) =3x/2 : x/2 =3:1
5. A boat takes a total time three hours to travel downstreams from P to Q and the upstream back from Q to P. what is the speed of boat in still water ?
i)The speed of the river current is 1 km per hour
ii)The distance between P and Q is 4 km.
Solution : i) The speed of the current = 1km/hr
ii)PO =4km
let the speed of the boat in still water be x km/hr
4/(x+1) +4/(x-1) =3
