Question
A man can row 32 km/hr in still water. It takes him
thrice as long to row up as to row down the river. Find the rate of the current.Solution
Let man’s rate upstream be x kmph. Then his rate downstream = 3x kmph. ∴Rate in still water =1/2 (3x+x)kmph=2x kmph ⇒32 = 2x⇒x = 16⇒3x=48 ∴ Rate of the stream =1/2 (48-16)kmph=16 kmph Alternate Method: Let U = speed of man in still water & V = speed of water So here N = time of upstream/ time of downstream = 3 So U/V = (N+1)/(N-1) = (3+1)/(3-1) = 4/2 =2 V = 32/2 = 16kmph
Redemption of debentures will decrease the debt-equity ratio
The Headquarters of European Union (EU) is situated in
Match List-I with List-II and select the correct answer from the codes given below.
The Special Drawing Rights (SDRs) facility is available at :
The birth rate is defined as the number of births in a year per ________ people.Â
Total number of bank branches in India is about?
To analyze and recommend implementable actions for improving the Board of Control for Cricket in India (BCCI), which committee is formed?
The 'school on wheels' initiative in Manipur is designed to provide educational services to children affected by:Â Â
What is the official currency of Bangladesh?
Which of the following is incorrect