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A and B can together finish a work 30 days. They worked together for 20 days and then B left. After another 20 days, A finished the remaining work. In how many days A alone can finish the work?
- a)70 days
- b)60 days
- c)12 days
- d)65 days
- e)None of the above
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
A and B can together finish a work 30 days. They worked together for 2...
(A + B)'s 20day's work
Remaining work
Now, 
work is done by A in 20 days
work is done by A in 20 days∴ The whole work will be done by A in (20×3) = 60days
Most Upvoted Answer
A and B can together finish a work 30 days. They worked together for 2...
Given information:
- A and B can finish the work together in 30 days.
- They worked together for 20 days.
- B left after 20 days.
- A finished the remaining work in another 20 days.
Let's assume that A alone can finish the work in 'x' days.
Work done by A and B together in 1 day = 1/30
Work done by A and B together in 20 days = (1/30) * 20 = 2/3
Remaining work = 1 - (2/3) = 1/3
Calculating A's work efficiency:
Work done by A in 1 day = 1/x
Given that A and B worked together for 20 days, so the work done by A in 20 days = (1/x) * 20 = 20/x
Remaining work done by A in 20 days = 1/3
Therefore, we can write the equation:
20/x = 1/3
Solving this equation for x:
Cross multiplying, we get:
x = (20 * 3) / 1
x = 60
Therefore, A alone can finish the work in 60 days.
Hence, the correct answer is option 'B' - 60 days.
- A and B can finish the work together in 30 days.
- They worked together for 20 days.
- B left after 20 days.
- A finished the remaining work in another 20 days.
Let's assume that A alone can finish the work in 'x' days.
Work done by A and B together in 1 day = 1/30
Work done by A and B together in 20 days = (1/30) * 20 = 2/3
Remaining work = 1 - (2/3) = 1/3
Calculating A's work efficiency:
Work done by A in 1 day = 1/x
Given that A and B worked together for 20 days, so the work done by A in 20 days = (1/x) * 20 = 20/x
Remaining work done by A in 20 days = 1/3
Therefore, we can write the equation:
20/x = 1/3
Solving this equation for x:
Cross multiplying, we get:
x = (20 * 3) / 1
x = 60
Therefore, A alone can finish the work in 60 days.
Hence, the correct answer is option 'B' - 60 days.
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Community Answer
A and B can together finish a work 30 days. They worked together for 2...
A and B can finish a work in 30days.
so they work 30units -30days
total no. of days they work together-20days means 20unit of work.
A takes 20days to do 10 unit of work. So, he will take 60 days to complete 30 unit of work.
correct answer is 60 days.
so they work 30units -30days
total no. of days they work together-20days means 20unit of work.
A takes 20days to do 10 unit of work. So, he will take 60 days to complete 30 unit of work.
correct answer is 60 days.
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A and B can together finish a work 30 days. They worked together for 20 days and then B left. After another 20 days, A finished the remaining work. In how many days A alone can finish the work?a)70 daysb)60 daysc)12 daysd)65 dayse)None of the aboveCorrect answer is option 'B'. Can you explain this answer?
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A and B can together finish a work 30 days. They worked together for 20 days and then B left. After another 20 days, A finished the remaining work. In how many days A alone can finish the work?a)70 daysb)60 daysc)12 daysd)65 dayse)None of the aboveCorrect answer is option 'B'. Can you explain this answer? for Quant 2024 is part of Quant preparation. The Question and answers have been prepared according to the Quant exam syllabus. Information about A and B can together finish a work 30 days. They worked together for 20 days and then B left. After another 20 days, A finished the remaining work. In how many days A alone can finish the work?a)70 daysb)60 daysc)12 daysd)65 dayse)None of the aboveCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Quant 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A and B can together finish a work 30 days. They worked together for 20 days and then B left. After another 20 days, A finished the remaining work. In how many days A alone can finish the work?a)70 daysb)60 daysc)12 daysd)65 dayse)None of the aboveCorrect answer is option 'B'. Can you explain this answer?.
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