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Asha can whitewash a hall in 13 days and her brother can do it in 52 days. How many days will they take if they work together?

Competition practiceTime & Work / Pipes
  • A10.4
  • B32.5
  • C13
  • D9

Step-by-Step Solution

Together they do 1/13 + 1/52 = 4/52 + 1/52 = 5/52 of the job per day, so 52/5 = 10.4 days.
Answer: A) 10.4

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