ATQ, we can say that We have given the difference between Downstream speed (Ds) and Upstream Speed (Us) is 6km/hr Then, Ds - Us = 6…….eq1 Let the speed of Downstream(Ds) of boat be [Speed= distance/time] = 72/4 = 18km/hr Now, putting the Ds value in eq1 we will get the value for Us. = 18 – Us = 6 18 – 6 = Us 12km/hr = Us Therefore, the speed of boat will be = (1/2) x (18 + 12) = (1/2) x 30 = 15km/hr
What is the ploidy of primary endosperm nucleus?
Which enzyme produced by nitrogen-fixing bacteria is responsible for converting atmospheric nitrogen into ammonia?
Biting and Chewing type of mouth parts are present in:
Which of the following crop is a source methane and nitrous oxide emission into the atmosphere?
When a cross is made between offspring and its recessive parent , it is known as
Which wheat rust is known as a killer disease?
The three Tier system or The Panchayati Raj system was first started at
Which microbe is most commonly used in beverage industry to ferment malted cereals to produce ethanol (for the preparation of beer, rum etc.)?
The ‘Golden Rice’ is genetically modified to produce:
When one single gene starts affecting multiple traits of living organisms, this phenomenon is known as…………………..
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