SSC CGL Time and Work question with solution
Time and WorkModerateSSC CGL 2024
Divya can complete a piece of work in 36 days and Sneha can complete the same work in 45 days. In how many days will they finish it working together?
- (A)22 days
- (B)40.5 days
- (C)20 days
- (D)9 days
Correct answer: (C) 20 days
Divya's one-day work = 1/36 and Sneha's one-day work = 1/45. Together they do 1/36 + 1/45 = 81/1620 = 1/20 of the work per day, so the work is finished in 20 days.
Shortcut: Days together = (a × b)/(a + b) = 1620/81 = 20.
About this question
- Subject
- Quantitative Aptitude
- Topic
- Time and Work
- Exam
- SSC CGL 2024
- Attempts on SSC Rank
- Not attempted yet
Appears in: SSC CGL 2024 Tier 2 Question Paper — 18 January, Shift 1
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