Solve for R
R=62.5
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R=\frac{50}{0.8}
Divide both sides by 0.8.
R=\frac{500}{8}
Expand \frac{50}{0.8} by multiplying both numerator and the denominator by 10.
R=\frac{125}{2}
Reduce the fraction \frac{500}{8} to lowest terms by extracting and canceling out 4.
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