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Let the speed of the boat in still water and the speed of the current be ‘x’ km/hr and ‘y’ km/hr, respectively Upstream speed of the boat = (x – y) = 140/7 = 20 km/hr Or, 28 – y = 20 Or, y = 28 – 20 = 8 km/hr Therefore, downstream speed of the boat = 28 + 8 = 36 km/hr Required time taken = 144/36 = 4 hours
The position of how many alphabets will remain unchanged if each of the alphabets in the word ‘RECEIVABLE’ is arranged in alphabetical order from le...
If in the given number 674839372, 2 is added to all the odd place digits and 1 is subtracted from the even place digits (from the left end) , then all t...
How many such pair(s) of letters are in the word “APOLOGISE” which has as many letters between them (both forward and backward) as in the English al...
How many such pairs of letters are there in the word ‘DEHRADUN’ (in both forward and backward directions) each of which has as many letters ...
If the consonants of the following words are arranged first, followed by the vowels as per the English alphabetical order and then the consonants are ch...
If all the prime digits of the number 6497843956 are written first (in increasing order) followed by even digits(in increasing order) and then odd digit...
In the word ‘POISON’ all consonants are written as their preceding letter and all vowels are written as their following letters. Now all letters a...
In the word ‘TOWARDS’ all consonants are written as their preceding letter and all vowels are written as their following letters. Now all letters ar...
How many pairs of letters are there in the word “TURMERIC” which has as many letters between them in the word as in the English alphabetical series...
If all the digits of the number '67453984' are written in descending order from left to right, then the position of how many digits remains unchanged? ...