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Ramesh can paint a wall in 10 days and Suresh can paint it in 15 days. Working together, how many days will they take? (answer in days)

Competition practiceTime & Work / Pipes
  • A6
  • B12.5
  • C5
  • D7.5

Step-by-Step Solution

Ramesh does 1/10 and Suresh 1/15 of the wall per day. Together: 1/10 + 1/15 = 3/30 + 2/30 = 1/6, so they need 6 days.
Answer: A) 6

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