Let the speed of boat = x and the speed of the stream = y 60/(x-y) = 4 ⇒ x-y = 15 50/(x+y) = 2 ⇒ x+y = 25 From above x = 20 km/hr
At the centre multipurpose socio-economic surveys are mainly conducted by -
If the salary of a person in the base year is Rs. 2000 per annuli and in the current year Rs. 5000. The CPI is 325, then the allowance required to maint...
A systematic sample does not yield good result, if -
From a population containing 30 units, 5 units are drawn by simple random sampling without replacement. The probability same specified unit included in ...
Supply Curve is a part of -
Which of the following statement is not true?
The most appropriate measure to compare the consistency of two series is -
Which of the following methods to measure seasonal variations comparatively utilizes the given data less?
Two random variables x and y have the following regression equations -
3x + 2y – 26 = 0
6x + y – 31 = 0
then, the mean values o...
Which of the following is a second-order condition of short-run equilibrium of firm under perfect competition?
