Question
The speed of a boat in still water is 5 times more than
that of the current. If the boat takes 10 hours to cover 200 km upstream, then find the time taken by the boat to cover 420 km downstream.Solution
Let the speed of the current be ‘x’ km/hr
Therefore, speed of the boat in still water = 6x km/hr
According to the question,
6x – x = 200 / 10
Or, 5x = 20
Or, x = 4 km/hr
Required time taken = 420 / (6x + x) = 420 / (7 × 4) = 420/28 = 15 hours
Select the option that is related to third number-cluster in the same way second number-cluster is related to first number cluster.
59: 106 :: 82: ?
Select the set in which the numbers are related in the same way as are the numbers of the following sets.
(Note: Operations should be performed o...
Select a suitable figure from the Answer Figures that would replace the question mark (?) from question figure.
Select the option that is related to the third number in the same way as the second number is related to the first number.
67 : 96 :: 45 : ?
Select the option that is related to the third number in the same way as the second number is related to first number and the sixth number is related to...
Select the option that is related to the third term in the same way as the second term is related to the first term.
BACTERIA : EXFWBUFX :: WOUND...
If 132 # 6 = 22 and 204 # 4 = 51, then 315 # 7 = ?
Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.
R _ _ T U V...
Audacious : Courageous : : Deflate : ______.
How many numbers are immediately preceded and succeeded by symbol?
6 7 @ # 2 8 8 $ 5 4 % 5 ! & # * 7 * + 9