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Let, the speed of boat be b km/hour and speed of current be s km/hour Average speed = 2xy/(x+y) (here, x is speed of downstream and y is speed of upstream) = (2 (b+s)(b-s))/((b+s+b-s)) = (b2-s2)/b = (225-25)/15 = `13 1/3` km/hour
Which method of extension is used for teaching a group of people new techniques and practices like preparing nursery bed, treating seeds with insecticid...
Highest productivity of sugarcane in India is :
Which variety of apple is recommended for early yield during April - May?
In which year was the "Amrit Catla" fish variety officially trademarked?
What is the Capacity of High-volume sprayer?
The yearly sequence and spatial arrangement of crops or of crops and fallow on a given area is known as
What sector-specific state body assists in the development of small and medium-scale enterprises in Uttarakhand?
A phenomenon in which the fruits are produced without fertilisation is called
The type of market, when there is only one buyer of the product present in the market, is called:
The headquarters of AGMARK is situated at:
