Question
A man takes 10 hours to row 21 km upstream from point A
to point B and back to A by boat. If he takes the same time to row 7 km downstream as upstream. If it takes time to cover 3 kilometers then find the velocity of the stream and the speed of the boat in still water.Solution
Let the speed of boat in still water =B and speed of stream =S then Speed of boat in downstream=B+S and distance =7km So now -time =7/B+S Speed of boat upstream =B-S and Distance =3km So, time = 3/B-S ATQ- 3/(B-S)=7/(B+S) 7B-7S=3B+3S 4B=10S B =5S/2 
And Speed of boat in still water = B =5km/h Â
A monopoly firm has the following demand and cost function
Q = 50-P
Total Cost = 20 + 2Q + 3Q2
Government imposes an exc...
What is the terms of trade formula?
If factor prices equal, slope of isoquant
If a country’s nominal GDP is constant, then which of the following statements about it would be correct?Â
___________ refers to the degree of correlation of the same variables between two successive time intervals
If a tax on a good is doubled, the deadweight loss from the tax
Demand function for two commodities was given as below. Which of the following options are correct? Q1= A1(Px1)-0.5 (Px2)0.2 Q2 = ...
How do expected inflation and changes in payment technology affect money demand?
According to the Economic Survey 2023-24, what measures helped reduce core inflation in India to a four-year low in FY24?
The natural rate of unemployment corresponds to:
Relevant for Exams:
