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Let the speed of boat in still water be x km/hr and the distance be y km. Rate downstream = (x + 3.5) km/hr Rate upstream = (x – 3.5) km/hr According to the question, y/(x + 3.5) = 2 --- (i) y/(x – 3.5) = 5/2 --- (ii) On dividing equation (i) by (ii), (x – 3.5)/(x + 3.5) = 2/(5/2) = 4/5 5x – 16.5 = 4x + 15 x = 16.5 + 15 = 31.5 kmph
In the question below, four words are given, two of which may or may not share a synonymous or antonymous relationship. From the given options, choose ...
Choose the word nearest in meaning to the given word.
Intercede
Select the most appropriate synonym of the given word.
Caustic
The science of colours.
Select the most appropriate synonym of the given word.
Reticent
A high area of rock with a steep side
Select the wrongly spelt word.
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The journalist was censured by the authorities for her controversial report.
