SSC CGL Time and Work question with solution
Time and WorkModerate
Anita can complete a piece of work in 15 days and Amit can complete the same work in 60 days. In how many days will they finish it working together?
- (A)45 days
- (B)14 days
- (C)11 days
- (D)12 days
Correct answer: (D) 12 days
Anita's one-day work = 1/15 and Amit's one-day work = 1/60. Together they do 1/15 + 1/60 = 75/900 = 1/12 of the work per day, so the work is finished in 12 days.
Shortcut: Days together = (a × b)/(a + b) = 900/75 = 12.
About this question
- Subject
- Quantitative Aptitude
- Topic
- Time and Work
- Exam
- SSC CGL
- Attempts on SSC Rank
- Not attempted yet
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