Sham and Ram can do a piece of work in 10 days. Sham and Lal can do it in 12 days and Ram and Lal can do it in20 days. Sham alone can complete the work in_____days.

Time and work is a basic concept in quantitative aptitude that is often tested in government exams. It is the basis of how work gets done at a particular time.  Here are some formulas for time and work: Work Done = Time Taken × Rate of Work Rate of Work = 1 / Time Taken Time Taken = 1 / Rate of Work Total Work Done = Number of Days × Efficiency W = NXD W = M × D  Here are some tips for time and work problems: Ratios of wages of individuals doing work are directly proportional to the ratio of the efficiency of the same individuals. If X is three times better than Y, then in any given... Show more

Time and work is a basic concept in quantitative aptitude that is often tested in government exams. It is the basis of how work gets done at a particular time. 

Here are some formulas for time and work:
Work Done = Time Taken × Rate of Work
Rate of Work = 1 / Time Taken
Time Taken = 1 / Rate of Work
Total Work Done = Number of Days × Efficiency
W = NXD
W = M × D 

Here are some tips for time and work problems:
Ratios of wages of individuals doing work are directly proportional to the ratio of the efficiency of the same individuals.
If X is three times better than Y, then in any given amount of time, X will complete 3 times more work than Y.
Time and work are related to indirect proportion.
If W can complete 1n of work in 1 day, then W will take n days to complete the whole work. 

Related Test: Quantitative Aptitude Practice Test: Time and Work

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