Algebra

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The officejet printer can copy sues dissertation in 16 minutes. The laser printer can copy the same document in 22 minutes. If the two machines work together, how long would they take to copy the dissertation?

  • Algebra -

    T = t1*t2 / (t1+t2),
    T = 22*16 / (22+16) = 9.26 min.

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