Let the speed of the boat be u and that of the stream be v. Then, speed of boat downstream = u + v And speed of boat upstream = u – v From I u + v = 18/3 = 6 km/hr ……….. (i) From II, u – v = 18/6 = 3 km/hr ……… (ii) From statement III, v = u/3 ……….(iii) From I and II, we get u = 9/2 = 4.5 km/hr. From I and III, we get u + u/3 = 6 Or 4u = 18 u = 4.5 km/hr. Hence statement I and either II or III is sufficient to answer the question.
Symptom of plant disease that occurs as an abnormal brushlike cluster of dwarfed weak shoots arising at or near the same point
What is required in an organic crop production plan?
Which family of birds do ducks belong to?
In maize crop, use of atrazine for weed control in maize has resulted in invasion of maize fields by _____
In animal cell the reserve food is stored in the form of _____
The term used to define the variation derived from any form of the cell or tissue culture is known as __________
Which of the following compounds is commonly used as a flavor enhancer in cooking?
What is the term used for the period when a female animal will accept service by the male?
Which seed rate should be adopted for major crops grown the fodder purpose
Enzyme used for tenderization of meat and meat products is/are
