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Let the downstream speed and upstream speed be x km/hr and y km/hr, respectively. According to question, 36/x + 18/y = 5 -----(1) 54/x + 12/y = 5 -----(2) Solving (1) and (2), we get x = 18 km/hr and y = 6 km/hr So, downstream speed = 18 km/hr
Which one of the following elements is not naturally found in human beings?
Select the related word from the given alternatives.
Expand: Contract :: Accurate: ?
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The value of logtan1° + logtan2° +....+logtan89° is:
