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Distance in downstream = 8km Time taken = 6 hours Rate of downstream (a) = distance/time = 4/3 km/hr Distance covered in upstream = 4km Time taken = 4 hours Rate of upstream (b) = distance/time = 1km/hr Speed in still water = 1/2(a+b) = 1/2(4/3+1) = 7/6 km/hr Time taken to cover (14km) in still water = distance/time = 14/(7/6) = 12 hours
If all the alphabets of alphabetical series are numbered as 26-1 from A-Z then what is the sum of the numbers of letters of the word “ DARE ”?
...How many pairs of digits are there in the number '68397562' which has as many digits between them in the number (both forward and backward) as in the nu...
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...
When the digits, which are odd in the number ‘ 4864353465 ’ are decreased by 2 and the remaining digits are increased by 1, then what is the sum of ...
If the digits in the number “ 73962548” are arranged in such a way that all the odd numbers are arranged first in ascending order and then all the ...
Which of the following letter will be 3rd letter from the left end if the letters at odd positions are replaced by succeeding letter in the w...
If all the vowels in the word ‘IMPORTANT’ are changed to the next letter in the English alphabetical order and all the consonants remain the same th...
If all the letters in the word ‘VANISHED’ are arranged in alphabetical order from left to right such that the vowels are arranged first followed by ...
Which of the following letters will be 8th letter from the left end if the letters at even positions are replaced by succeeding letter in the...
How many such pairs of letters are there in the word ‘CALCULATED’ as many letters between them as in the English alphabet series?
