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Q:

A and B can separately complete a piece of work in 20 days and 30 days respectively. They worked together for some time then B left the work. If A completed the rest of the work in 10 days, then B worked for how many days?

  • 1
    6 days
  • 2
    8 days
  • 3
    12 days
  • 4
    16 days
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Answer : 1. "6 days"

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