work and time
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work and time questions with answers

4 multiple-choice questions. Open any question for its answer and explanation.

  1. In a certain factory there are five workers A, B, C, D and E. A can complete a work in 4 minutes, B in 5 minutes, C in 6 minutes, D in 10 minutes and E in 12 minutes. The average number of units of work completed per worker per minute will be
  2. 15 persons can fill 35 boxes in 7 days. How many persons are required to fill 65 boxes in 5 days?
  3. A can complete a certain work in 4 minutes, B in 5minutes; C in 6 minutes: D in 10 minutes; and E in 12 minutes. The average number of units of work completed by then per minute will be
  4. A can do a work in 5 days, B can do the same work in 10 days and C can do it in 30 days.If A, B and C work together, then how many days are required to complete the work?