Question
Time taken by a boat to travel certain distance in
upstream direction is twice the time taken by the boat to cover same distance in downstream direction. If the total time needed to cover 24km upstream and 24km downstream is 3 hours, then calculate the average of speed of boat in still water and speed of stream.Solution
Let speed of boat in still water: u and speed of stream: v d/(u-v) = 2d/(u+v) => u = 3v 24/(u+v) + 24/(u-v) = 3 => v = 6km/hr Average of speed of still water and speed of stream = (u+v)/2 => 12
On the way back down,
P- wheel surrounded by strings of
Q- I paused at a wind-driven prayer
R- colorful, flickering prayer flags.
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A. These bea...
Directions: In each of the following questions, a sentence is given with three words marked as (A), (B), and (C). These words may or may not be placed ...
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