alleryA ला 12 दिवस आणि B ला 24 दिवस लागतात. काम संपण्याच्या 3 दिवस आधी A काम सोडून जातो. एकूण लागलेला वेळ किती होता?
A10 दिवस
B9 दिवस
C12 दिवस
D8 दिवस
Answer & Solution
Correct answer: A. 10 दिवस
B x दिवस काम करतो आणि A x - 3 दिवस काम करतो: x/24 + (x-3)/12 = 1 वरून x = 10 दिवस मिळतात.
Keep practising Time and Work
Browse all Time and Work questions for RRB NTPC, or explore more Quantitative Aptitude topics.
Related questions
What labor metric denotes the amount of work done by an average worker in a day?How is task time found from man-hours and worker count?If a task requires 20 man-hours, how many hours will a team of 2 workers take?A does a job in 16 days, B in 8 days. A works 4 days alone, then B joins. Total time from A alone does a job in 9 days and B alone in 18 days. They earn Rs 900 together. A's share Sita does a job in 30 days. Sita and Tara together do it in 20 days. Tara alone needsA pipe alone fills a tank in 15 minutes; with a second pipe it takes 6 minutes. The secondTen men working 8 hours a day build a wall in 18 days. Twelve men at 6 hours a day need