Question
The speed of a boat in still water is 10.5 times the
speed of the stream. If the difference between the upstream and downstream speed of the boats is 26 km/hr, then find the time taken by the boat to travel 494 km in upstream.Solution
Let the speed of the stream be ‘x’ km/hr Therefore, speed of the boat in still water = 10.5x km/hr Upstream speed of the boat = 10.5x – x = 9.5x km/hr Downstream speed of the boat = x + 10.5x = 11.5x km/hr According to the question, 11.5x – 9.5x = 26 => 2x = 26 => x = 13 Therefore, upstream speed of the boat = 9.5x = 123.5 km/hr Required time taken = 494/123.5 = 4 hours
How many boxes are kept above the box with Orchid?
Who likes Daisy?
How many persons likes after the one who likes Papaya?
Statements:
A < B ≥ C > U = W; R < Q > L ≤ W = Y; Q > P
Conclusions:
I. B < P
II. C > R
On which of the following days the English exam was held?
Six friends B, C, D, E, F and G, have exam on six different days, starting from Monday and ending on Saturday, of the same week in the month. G has exa...
Four of the five among the following are similar in such a way to form a group, which one of following doesn’t belong to the group?
...Whose anniversary is on 27th of July?
What is the position of E with respect to D?
If C is related to A, D is related to E, in the same way to how G is related to?
