3. Ram and Shyam, both, can complete a piece of work in 100
days. They start working together but Shyam leaves after 20
days. In how many days will Ram complete the remaining
work?
A 50 days
B. 60 days
C. 40 days
D. 70 days
Answers
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Answer:
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101 percent correct ans....
Explanation:
Ram takes 20 days to complete a piece of work.
Shyam takes 30 days to complete a piece of work.
Ram completes (1/20) of a piece of work in 1 day.
Shyam completes (1/30) of a piece of work in 1 day.
Together R and S complete (1/20) + (1/30) = (1/12) of a piece of work in 1 day.
(1/12) of a piece of work - 1 day
(12/12) of a piece of work - (12/12)/(1/12) = 12 days.
R and S take 12 days to complete a piece of work when they work together.
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