Question
Anuj, Bittu, and Chintu can individually complete a
certain task in 84 days, 105 days, and 60 days, respectively. They all begin working together, but Bittu leaves after working for 12 days. Determine the total number of days required to complete the entire task.Solution
ATQ, Let total work = 420 days (LCM of 84, 105 and 60) Amount of work completed by Anuj in one day = 420/84 = 5 units Amount of work completed by Bittu in one day = 420/105 = 4 units Amount of work completed by Chintu in one day = 420/60 = 7 units Amount of work completed by Anuj, Bittu and Chintu together in 12 days = 12 × (5 + 4 + 7) = 192 units Amount of time taken by Anuj and Chintu together to complete the remaining work = (420 – 192)/12 = 19 days Desired time = 12 + 19 = 31 days
When the digits, which are odd in the number ‘4586353485’ are decreased by 2 and the remaining digits are increased by 1, then what is the sum of 4t...
If all the consonants of the word “WAREHOUSE” are replaced by immediate preceding letter in the alphabetical series, how many vowels are there in th...
How many pairs of letters are there in the word ‘MESSAGES’ which has as many letters between them in English alphabetical series (both in forward an...
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 c...
If ‘A’ means ‘divided by’, ‘B’ means ‘multiplied by’, ‘C’ means ‘added by’ and ‘D’ means ‘subtracted from’, then – ' 1...
How many such pairs of letters are there in the word CHAIRPERSON each of which has as many letters between them in the word as in the English alphabet? ...
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...
How many such digits are there in the number 86732459 each of which is far away from the beginning of the number as when the digits are arranged in desc...
If all the letters in the word ‘APPLAUSE’ are arranged in alphabetical order from left to right such that the vowels are arranged first followed ...
If in the number 587683529, 5 is added to each of the digit which is less than four and 2 is subtracted from each of the digit which is greater than fou...
