SSC CHSL Time and Work question with solution
Time and WorkModerate
Pooja can complete a piece of work in 6 days and Karan can complete the same work in 12 days. In how many days will they finish it working together?
- (A)4 days
- (B)9 days
- (C)3 days
- (D)6 days
Correct answer: (A) 4 days
Pooja's one-day work = 1/6 and Karan's one-day work = 1/12. Together they do 1/6 + 1/12 = 18/72 = 1/4 of the work per day, so the work is finished in 4 days.
Shortcut: Days together = (a × b)/(a + b) = 72/18 = 4.
About this question
- Subject
- Quantitative Aptitude
- Topic
- Time and Work
- Exam
- SSC CHSL
- Attempts on SSC Rank
- Not attempted yet
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