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A building contractor takes contract to do a work in 30 days by 40 men. In the first 10 days 10 men were absent. In the second 10 days all men were present. Now how many more men he need to employ so that work is finished in time?
- a)10
- b)20
- c)30
- d)40
- e)None
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A building contractor takes contract to do a work in 30 days by 40 men...
Understanding the Problem
A contractor has to complete a project in 30 days using 40 men. The work is divided into three segments over these 30 days.
Work Distribution
- Total Work: The total work can be calculated as "man-days" which is 40 men * 30 days = 1200 man-days.
Work Done in the First 10 Days
- Men Present: During the first 10 days, 10 men were absent, leaving 30 men available.
- Work Done:
- Work done in 10 days = 30 men * 10 days = 300 man-days.
Work Done in the Second 10 Days
- Men Present: All 40 men were present in the next 10 days.
- Work Done:
- Work done in the second 10 days = 40 men * 10 days = 400 man-days.
Total Work Completed
- Total Work After 20 Days:
- Total work done in 20 days = 300 man-days + 400 man-days = 700 man-days.
Remaining Work
- Remaining Work:
- Remaining work = Total work - Work done = 1200 man-days - 700 man-days = 500 man-days.
Time Remaining
- Days Left:
- Days remaining = 30 days - 20 days = 10 days.
Calculating Additional Men Needed
- Men Needed:
- To complete 500 man-days in 10 days, the required number of men = Remaining work / Days remaining = 500 man-days / 10 days = 50 men.
- Additional Men Required:
- Since there are already 40 men, additional men needed = 50 men - 40 men = 10 men.
Conclusion
The contractor needs to employ 10 more men to finish the work on time. Thus, the correct answer is option 'A'.
A contractor has to complete a project in 30 days using 40 men. The work is divided into three segments over these 30 days.
Work Distribution
- Total Work: The total work can be calculated as "man-days" which is 40 men * 30 days = 1200 man-days.
Work Done in the First 10 Days
- Men Present: During the first 10 days, 10 men were absent, leaving 30 men available.
- Work Done:
- Work done in 10 days = 30 men * 10 days = 300 man-days.
Work Done in the Second 10 Days
- Men Present: All 40 men were present in the next 10 days.
- Work Done:
- Work done in the second 10 days = 40 men * 10 days = 400 man-days.
Total Work Completed
- Total Work After 20 Days:
- Total work done in 20 days = 300 man-days + 400 man-days = 700 man-days.
Remaining Work
- Remaining Work:
- Remaining work = Total work - Work done = 1200 man-days - 700 man-days = 500 man-days.
Time Remaining
- Days Left:
- Days remaining = 30 days - 20 days = 10 days.
Calculating Additional Men Needed
- Men Needed:
- To complete 500 man-days in 10 days, the required number of men = Remaining work / Days remaining = 500 man-days / 10 days = 50 men.
- Additional Men Required:
- Since there are already 40 men, additional men needed = 50 men - 40 men = 10 men.
Conclusion
The contractor needs to employ 10 more men to finish the work on time. Thus, the correct answer is option 'A'.
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Community Answer
A building contractor takes contract to do a work in 30 days by 40 men...
40*30 = 30*10+40*10+(40+x)*10
x = 10
x = 10
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Question Description
A building contractor takes contract to do a work in 30 days by 40 men. In the first 10 days 10 men were absent. In the second 10 days all men were present. Now how many more men he need to employ so that work is finished in time?a)10b)20c)30d)40e)NoneCorrect answer is option 'A'. Can you explain this answer? for Quant 2025 is part of Quant preparation. The Question and answers have been prepared according to the Quant exam syllabus. Information about A building contractor takes contract to do a work in 30 days by 40 men. In the first 10 days 10 men were absent. In the second 10 days all men were present. Now how many more men he need to employ so that work is finished in time?a)10b)20c)30d)40e)NoneCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Quant 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A building contractor takes contract to do a work in 30 days by 40 men. In the first 10 days 10 men were absent. In the second 10 days all men were present. Now how many more men he need to employ so that work is finished in time?a)10b)20c)30d)40e)NoneCorrect answer is option 'A'. Can you explain this answer?.
A building contractor takes contract to do a work in 30 days by 40 men. In the first 10 days 10 men were absent. In the second 10 days all men were present. Now how many more men he need to employ so that work is finished in time?a)10b)20c)30d)40e)NoneCorrect answer is option 'A'. Can you explain this answer? for Quant 2025 is part of Quant preparation. The Question and answers have been prepared according to the Quant exam syllabus. Information about A building contractor takes contract to do a work in 30 days by 40 men. In the first 10 days 10 men were absent. In the second 10 days all men were present. Now how many more men he need to employ so that work is finished in time?a)10b)20c)30d)40e)NoneCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Quant 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A building contractor takes contract to do a work in 30 days by 40 men. In the first 10 days 10 men were absent. In the second 10 days all men were present. Now how many more men he need to employ so that work is finished in time?a)10b)20c)30d)40e)NoneCorrect answer is option 'A'. Can you explain this answer?.
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