SSC CGL Time and Work question with solution
Time and WorkModerateSSC CGL 2023
Pooja can complete a piece of work in 9 days and Rahul can complete the same work in 18 days. In how many days will they finish it working together?
- (A)13.5 days
- (B)9 days
- (C)6 days
- (D)5 days
Correct answer: (C) 6 days
Pooja's one-day work = 1/9 and Rahul's one-day work = 1/18. Together they do 1/9 + 1/18 = 27/162 = 1/6 of the work per day, so the work is finished in 6 days.
Shortcut: Days together = (a × b)/(a + b) = 162/27 = 6.
About this question
- Subject
- Quantitative Aptitude
- Topic
- Time and Work
- Exam
- SSC CGL 2023
- Attempts on SSC Rank
- 1 (100% answered correctly)
Appears in: SSC CGL 2023 Tier 1 Question Paper — 14 July, Shift 2
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