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Ratio of speed of boat in downstream and speed of stream is 4 : 1 Given Speed of current = 5 km/ h Speed of boat in downstream = 4 × 5 = 20 km/h Speed of boat in still water = Speed of boat in downstream – Speed of current = 20 – 5 = 15 km/h Speed of boat in upstream = 15 – 5 = 10 km/h Distance travelled by boat in upstream in 2 hours = 10 × 2 = 20 km
Which of the following is a second-order condition of short-run equilibrium of firm under perfect competition?
The Drobish-Bowley price index formula is the -
Infant mortality rate is the ratio of -
The variance of first n natural numbers is -
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 statement is not true?
The most appropriate diagram to represent data relative to monthly expenditure on different items of a family is -
Supply Curve is a part of -
Residual method is used to measure -
byx and bxy are two regression coefficients. If byx > 0, then bxy will be -