Question
The speed of a boat in still water is 16/ 3 km/ h. It
was found that the boat takes thrice as much time to row up as it does to row down the same distance in the river stream. Find the speed of the river stream. (in m/sec)Solution
Let the speed of boat in still water =B and speed of stream =S then B=16/3 km/h Let the time taken in downstream =x Then time in upstream =3x Speed of boat in Downstream =B+S Speed of boat in Upstream=B-S Now ATQ-. (B-S)3x =x(B+S) (B-S)/(B+S) =x/3x (B-S) =x         … (1) (B+S) =3x      … (2) So, Solving after (1) +(2) B=2x, S=x Now- 2x = 16/3 x= 16/6=8/3 x =S = 8/3 ×5/18 Speed of stream = (20/27) m/s
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Column (1)
In the following questions, two columns are given, containing three phrases each. A phrase from the first column may or may not connect with a phrase f...
Column (1)
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- In the following question, two columns are given containing three sentences/phrases each. In the first column, sentences/phrases are A, B, and C; in the se...
In each of the following questions, two columns are given containing three sentences/ phrases each. A sentence or phrase from the first column may or m...
Column (1)
Directions: Match the words in Column A with their meanings in Column B, and choose the correct combination from the options given below:
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