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
- In each of the questions below, a sentence is given with four words highlighted in bold in the sentence. Among these bold words one may be wrongly spelt. T...
Choose the word with the incorrect spelling.Â
Choose the word with correct spelling.
The political retoric of foreign aggression is backed up by very brisk policing at home.
...Directions: In each question below, four words printed in bold type are given. These are numbered (A), (B), (C) and (D). One these words printed in bol...
- In each of the questions below, a sentence is given with four words highlighted in bold in the sentence. Among these bold words, one may be wrongly spelt. ...
The recent study emphasized (1) the need to address climate change through sustainable (2) farming practices and encouraged farmers to adopt innovative...
In the following questions, four words are given in bold. One of them may be incorrectly spelt. Identify the incorrectly spelt word. If all are correct...
India is one of their favourite destinations for this trail .
  Select the Correctly spelt word.
Relevant for Exams:
