Question
The speed of the boat in still water is 12 km/hr and the
speed of the stream is 9 km/hr. A boat goes 105 km downstream with its usual speed but at the time of returning the speed of the boat in still water is doubled. Find the total time taken by boat to cover the whole distance. TYPE 34Solution
According to the question, Required time = 105/(12 + 9) + 105/(24 – 9) => 105/21 + 105/15 => 5 + 7 = 12 hours
If it is possible to make to make only one meaningful word with the first, second, fifth and seventh letters of the word “STRAWBERRY”, which of the...
How many such pairs of letters are there in the word ‘CALCULATOR’, each of which has as many letters between them as in the English alphabetical se...
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 pairs of letters are there in the word ‘PARALLEL’ which has as many letters between them (both forward and backward) in the word as in the ...
If the letters of the word “REGRESSION” are arranged in alphabetical order from the left end, then which letter (in the English alphabetical series...
If all the number 6284593 are arranged in descending order from left to right, the position of how many numbers will remain unchanged?
How many such pair(s) of letters are in the word “DIVIDER” which has as many letters between them (both forward and backward) as in the English alp...
Which of the following word is third to the right if, all vowels are replaced by the preceding letter and all consonant replaced with next letter in the...
How many pairs of letters are there in the word ‘RESONANCE’, which has as many letters between them in the words as in English alphabetical series?<...
When the odd digits in the number ‘742726574’ are decreased by 2 and the remaining digits are increased by 2, then what is the sum of 4th...
Relevant for Exams:
