March 26, 2017

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Yuki's age is four years more than one-fourth of Xena's age. Xena's age is 21 years and 6 months more than seven-eighths of Yuki's age. How old are Xena and Yuki? Thank you.

  • math - ,

    y = 1/4x + 4

    x = 7/8y + 21.5

    Substitute 1/4x+4 for y in second equation and solve for x. Insert that value into the first equation and solve for y. Check by inserting both values into the second equation.

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