SSC CHSL Time and Work question with solution
Time and WorkModerate
Sneha can complete a piece of work in 14 days and Amit can complete the same work in 35 days. In how many days will they finish it working together?
- (A)9 days
- (B)21 days
- (C)10 days
- (D)24.5 days
Correct answer: (C) 10 days
Sneha's one-day work = 1/14 and Amit's one-day work = 1/35. Together they do 1/14 + 1/35 = 49/490 = 1/10 of the work per day, so the work is finished in 10 days.
Shortcut: Days together = (a × b)/(a + b) = 490/49 = 10.
About this question
- Subject
- Quantitative Aptitude
- Topic
- Time and Work
- Exam
- SSC CHSL
- Attempts on SSC Rank
- Not attempted yet
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