Question
The speed of a boat in still water is 8.5 times the
speed of the stream. If the difference between the upstream and downstream speed of the boats is 22 km/hr, then find the time taken by the boat to travel 495 km in upstream.Solution
Let the speed of the stream be ‘x’ km/hr Therefore, speed of the boat in still water = 8.5x km/hr Upstream speed of the boat = 8.5x – x = 7.5x km/hr Downstream speed of the boat = x + 8.5x = 9.5x km/hr According to the question, 9.5x – 7.5x = 22 => 2x = 22 => x = 11 Therefore, upstream speed of the boat = 7.5x = 82.5 km/hr Required time taken = 495/82.5 = 6 hours
Who among the following person goes on 17th March?Â
Seven different coloured books are kept one after the other.
i. The RED book is just on the top of the ORANGE book.
ii. The BLUE book is b...
Q is related to W in a way, R is related to Y in the same way then which of the following is related to L in the same way?
Which one of the following combinations is correct?
How many floors are there below the floor on which the one who likes Hockey lives?
Four of the following five are alike in a certain way as per the given arrangement and thus form a group. Find the one that does not belong to that gr...
Who among of the following likes Continental?Â
Who lives on the same floors?
If ‘H’ is born between ‘B’ and ‘C’, then what can be the age of ‘H’?
In the word ‘SOMETIME’ all consonants are written as their preceding letter and all vowels are written as their following letters. Now all letters a...
Relevant for Exams:
