📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!
  • google app store apple app store
    • ✖

      Question

      Two people, A and B, working separately can sanitize a

      building in 6 and 10 hours, respectively. They work in stretches of one hour alternately. If A begins at 8 a.m., then when will the work be finished?
      A 11/2hours Correct Answer Incorrect Answer
      B 22/3hours Correct Answer Incorrect Answer
      C 15/4hours Correct Answer Incorrect Answer
      D 6/5hours Correct Answer Incorrect Answer

      Solution

      A                            B 6                            10                30                         (Total work) 5                            3             -Efficiency Working fashion ® (A, B, A, B.) 2 hours ® 8 units   6 hours ® 24 units 7 hours ® 29 units 8 hours ® 1/ 3 hours ® 30 units Total time ® 22/3 hours   Þ Work will finish.

      Practice Next
      More Time and work Questions

      Relevant for Exams:

      ask-question