Question
A and C together can paint a wall in 18 days. If C takes
36 days to do it alone, and C works for 27 days after A leaves the job, what is the percentage of work completed by A?Solution
Given: A + C together can paint the wall in 18 days ⇒ Work rate = 1/18 C alone can do it in 36 days ⇒ Work rate = 1/36 C works for 27 days after A leaves Let A and C work together for x days Work by A + C = x × 1/18 Work by C alone = 27 × 1/36 = 3/4 Total work = 1 So, x/18 + 3/4 = 1 x/18 = 1 - 3/4 = 1/4 x = 1/4 × 18 = 4.5 days A's individual rate = 1/18 - 1/36 = 1/36 A’s work in 4.5 days = 4.5 × 1/36 = 1/8 Hence, A completed 1/8 = 12.5% of the work
In the word ‘GRAVEYARD’ all consonants are written as their preceding letter and all vowels are written as their following letters. Now al...
Which of the following letter will be 8th letter from the left end if the letters at even positions are replaced by succeeding letter in the word “LIM...
How many such pairs of letter in the word DUPLICATE, each of which has as many letters between them in the word(in both forward and backward directions ...
If it is possible to make a four letter meaningful word using, 3rd, 6th, 8th and 10th letters of the word ‘SUGGESTION’, then what is the 2nd letter...
If all the alphabets are rearranged within itself as they appear in the English dictionary in the word “DETERMINATION” then which of the following ...
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 pairs of letters are there in the word ‘HOLIDAY’ which maintain their alphabetical positioning (both forward and backward directions)?
If all the letters of the word SUPPLEMENT are arranged in the alphabetical order starting from the left end, how many consonants appear at the odd numb...
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...
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...
