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Let the speed of boat in still water and speed of stream be 'x' km/hr and 'y' km/hr, respectively. According to question; (220/x) - (120/x) = 4 Or, (100/x) = 4 So, x = 25 Now, 11 x (25 + y) = 11 x (22 - y) + 22 Or, 275 + 11y = 275 - 11y + 22 Or, 22y = 22 So, y = 1 So, downstream speed of the boat = (25 + 1) = 26 km/hr And, upstream speed of the boat = (25 - 1) = 24 km/hr Required time taken = (200/26) + (110/24) ~ (8 + 5) ~ 14 hours
Select the option that represents the letters which, when sequentially placed from left to right in the blanks below, will complete the letter series.
A number has been denoted to each of the given letters. Select the option from the following four possible arrangements of these numbers that forms a me...
Three friends, A, B and C work in an office, in the IT, HR and Banking departments. A works in the banking department and works 8 hours a day, but, the ...
Find which figure is to be removed so that all, starting from I, fit into a pattern.
Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the letter-cluster that is different.
Three of the following four are alike in a certain way and so form a group.
Which one does not belong to that group?
What should come in place of '?' in the given series?
24 103 498 2473 12348 ?
What will come in the place of the question mark (?) in the following equation, if '+' and '–' are interchanged and '×' and '÷' are interchanged?
Select the correct combination of mathematical signs to replace * signs and to balance the given equation:
72 * 144 * 72 * 6 * 40 * 110
Select the number from among the given options that can replace the question mark (?) in the following series.
99, 123, 150, 180, 213, ?
