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Q. Two pipes can fill a tank in 20 and 24 minutes respectively and a waste pipe can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 minutes. The capacity of the tank is:

  • (A) 60 gallons
  • (B) 100 gallons
  • (C) 120 gallons
  • (D) 180 gallons
  • Correct Answer - Option(C)
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  • Filed under category Math
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