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
Consider the following statements about unemployment:
1. Frictional unemployment occurs due to short-term transitions in the labor market.
Match the following women with their achievements:
- The Sao Joao festival is a traditional annual celebration in which Indian state?
Which of the following countries is not a part of the European Free Trade Association block?
World Refugee Day is celebrated on which of the following days?
Tanjore Balasaraswati was a dancer of which of the following dance forms?
Which Gurudwara is located near Pratap Gate in Kaithal town of Haryana?
Who authored the book Hind Swaraj, which discusses self-rule and critiques modern civilization?
- Which individual was confirmed by the US Senate as the Director of the National Institutes of Health (NIH)?
- In which month of the Hindu calendar is the famous Jagannath Rath Yatra held?
Relevant for Exams:
