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802

Q:

Two pipes, D and E, can fill a cistern in 26 and 78 hours, respectively, while working alone. If the two pipes are opened together, the time taken to fill the cistern is:

  • 1
    $$18{1\over 4}$$
  • 2
    $$19{1\over }$$
  • 3
    $$18{1\over 3}$$
  • 4
    $$19{19\over 4}$$
  • Show Answer
  • Workspace

Answer : 2. "$$19{1\over }$$"

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