Percent Exercises

Answers

  1. \(x = 0.05 \cdot 30\)

    \(x = 7.5\)

  2. \(x = 0.38 \cdot 56\)

    \(x = 21.28\)

  3. \(x \cdot 62 = 50\)

    \(\frac{62x}{62} = \frac{50}{62}\)

    \(x = 0.806 = 80.6\%\)

  4. \(\frac{5}{7} = x \cdot \frac{11}{12}\)

    \((\frac{12}{11}) (\frac{5}{7}) = (x)(\frac{11}{12}) (\frac{12}{11}) \)

    Multiply both sides by the reciprocal of \(\frac{11}{12}\)

    \(\frac{60}{77} = x\)

    \(0.779 = x\)

    \(77.9\% = x\)