Subject
Bank Exam
Topic
পূবালী ব্যাংক লিমিটেড (জুনিয়র অফিসার) ৩০.০৯.২০২৩
A works twice as fast as B. If B can complete a work in 12 days independently, the number of days in which A and B can together finish the work is:
A works twice as fast as B. If B can complete a work in 12 days independently, the number of days in which A and B can together finish the work is:
ক)
4 daysখ)
6 daysগ)
8 daysঘ)
18 daysExplanation
Ratio of rates of working of A and B = 2 : 1 So, ratio of times taken = 1 : 2 B's 1 day's work = 1/12. Therefore, A's 1 day's work = 1/6; (2 times of B's work) (A + B)'s 1 day's work = (1/6 + 1/12) = 3/12 =1/4. So, A and B together can finish the work in 4 days.Related questions
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