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debthornton

  • 3 years ago

A tank can be filled by a large intake pipe in 3 hours or by a small intake pipe in 4 hours. If both intake pipes are opened, how long will it take to fill the tank?

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  1. sauravshakya
    • 3 years ago
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    1/(1/3+1/4)

  2. sauravshakya
    • 3 years ago
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    Simplify it

  3. debthornton
    • 3 years ago
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    so, it would be 7/12?

  4. sauravshakya
    • 3 years ago
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    12/7

  5. debthornton
    • 3 years ago
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    1 5/7 hours?

  6. sauravshakya
    • 3 years ago
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    yes

  7. debthornton
    • 3 years ago
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    thank you

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