Question
A boat takes 20 hours to travel 260 km downstream. The
speed of the boat in still water is 125% greater than the speed of the stream. If the boat completes a round trip from point 'P' to point 'Q' and back to 'P' in 18 hours, determine the distance between points 'P' and 'Q'.Solution
Downstream speed of the boat = (260/20) = 13 km/hr Let the speed of the stream be '4x' km/hr So, speed of boat in still water = 4x X (2.25) = '9x' km/hr So, (4x + 9x) = 13 So, 13x =13 So, 'x' = 1 So, speed of the boat in still water = 9 km/h The upstream and downstream speed of the boat are 5 km/h and 13 km/h respectively. Let the distance between points 'P' and 'Q' be 'A' km. ATQ, (A/13) + (A/5) = 18 Or, (18A/65) = 18 So, 'A' = 65
Which of the following letter-clusters will replace the question mark (?) in the given series?
LOK, JMI, HKG, FIE, ?
Which figure should replace the question mark (?) in the following series to continue the pattern?
Three statements are followed by three conclusions numbered I, II and III. You have to consider these statements to be true, even if they seem to be at ...
What should come in place of ? in the given series?
26 37 59 92 136 ?
X # Y means 'X is the brother of Y'
X @ Y means 'X is the daughter of Y'
X & Y means 'X is the husband of Y'
X % Y means 'X is the ...
UBIP is related to YFMT in a certain way based on the English alphabetical order. In the same way, IPWD is related to MTAH. To which of the following is...
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 ...
Three of the following words are alike in some manner and hence form a group. Which word does NOT belong to that group? (The words must be considered as...
Complete the given series by replacing ‘?’
3, 8, 14, 21, 29, ‘?’
Select the figure from among the given options that can replace the question mark (?) in the following series.
Relevant for Exams:
