Speed of a boat in still water to speed of boat in upstream is 10:7. If the boat can travel 390 km in downstream in 5 hours, then find the time taken by the boat to cover 18 km in still water.
Let speed of boat in still water and speed of boat in upstream be ‘10x’ km/h and ‘7x’ km/h, respectively. Speed of stream = 10x – 7x = 3x km/h Speed of boat in downstream = 10x + 3x = 13x km/h So, 13x = 390/5 = 78 Or, x = 6 Speed of boat in still water = 10 × 6 = 60 km/h Desired time = 18/60 = 18 minutes
The Supreme Court of India comprises the Chief Justice and how many other Judges?
Identify the leader of the Cabinet Mission sent to India in 1946 to discuss the terms of independence.
Which Five-Year Plan in India was formulated based on the Gadgil Formula?
Who was the President of the Banaras Session of the Indian National Congress in 1905?
In the context of the Constitution and Polity of a country, which of the following is/are correct?
1. A Constitution determines the relationship ...
Which of the following states have been the former union territories?
1. Himachal Pradesh
2. Manipur
3. Haryana
4. Tripura
Who elects the Vice President of India?
How many members' support is required to admit an adjournment motion in the Lok Sabha?
Appointments for all India Services are made by:
Who holds the authority to legislate on subjects not listed in the Indian Constitution's Union, State, or Concurrent lists?
