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2220

Q:

A and B together can plough a field in 10 hours but by himself A requires 15 hours. How long would B take to plough the same field?

  • 1
    10 hours
  • 2
    20 hours
  • 3
    30 hours
  • 4
    40 hours
  • Show Answer
  • Workspace

Answer : 3. "30 hours"

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