Question
A boat covers the distance between two points downstream
in 2 hours and upstream in 3 hours. If the speed of the stream is 3 km/h, find the speed of the boat in still water and the distance between the two points.Solution
Let speed of boat in still water = u km/h Speed of stream = v = 3 km/h Downstream speed = u + v, upstream speed = u − v Let distance = d km. Downstream: d/(u + v) = 2 …(1) Upstream: d/(u − v) = 3 …(2) From (1): d = 2(u + v) From (2): d = 3(u − v) Equate: 2(u + v) = 3(u − v) 2u + 2v = 3u − 3v ⇒ u = 5v = 5 × 3 = 15 km/h Then d = 2(u + v) = 2(15 + 3) = 36 km Answer: Boat speed = 15 km/h, distance = 36 km.
Which of the following is the correct legal effect if Parliament enacts a law under Article 249 (national interest) that encroaches upon State List subj...
Where no provision is made by contract between the partners for the determination of their partnership, the partnership is-
If the offence be punishable with imprisonment as well as fine, in case of default of payment of fine, the Court may direct imprisonment for a term whic...
Temporary injunctions are such as are to continue until a specific time, or until the further order of the court, and they may be granted at___________...
Out of the following thinkers who has not contributed to the development and theories of Torts?______.
According to the Insolvency and Bankruptcy Code, which of the following is not considered afinancial creditor?
As per Section 12 of the Depositories Act, 1996, a beneficial owner may create a pledge or hypothecation in respect of a security owned by him through a...
Under Section 346(2), no remand of an accused can exceed—
In a case against Public servant he shall be exempted___________.
What does the term Counterfeit mean?
