Speed of boat in still water is 60% more than speed of current and total time takes by boat to cover certain distance going downstream and upstream is 32 hours. Find the time taken by boat to cover same distance in still water.
Let speed of stream be 5x km/h. And speed of boat in still water = 5x × (160/100) = 8x Let the distance be ‘d’ km. => d/(5x + 8x) + d/(8x – 5x) = 32 => 16d/39x = 32 => d = 78x Required time = 79x/8x = 9(3/4) hours
All the letters of the word ‘MAGAZINE’ are arranged in alphabetical order from right to left. Then all the consonants are replaced with the previou...
If third letter from the left end of each word from each group is to be considered, then which among the following group of words can make at least one ...
If in the number 794387425, all digits are arranged in increasing order from right to left than how many digits remain the same place in the new arrange...
How many pairs of letters are there in the word “POWDER” each of which has as many letters between them in the word as in alphabetical serie...
How many pairs of letters are there in the word “HELICOPTER” each of which have as many letters between them in the word as they have between them i...
How many pairs of letters are there in the word “ PROMPTNESS ” which has as many letters between them in the word as in the English alphabetical ser...
Given below are four combinations [i], [ii], [iii] and [iv] of five words. In each combination you have to arrange the letters in English alphabetical o...
If ‘-‘ means ‘addition’, ‘+’ means ‘subtraction’, ‘÷’ means ‘multiplication’ and ‘×’ means ‘division’ , then find the ...
Which of the following is correct?
If in the word DOMINATE, first all the consonants are arranged in alphabetical order from left to right and then all vowels are arranged in alphabetica...