Answer
$27\frac{4}{5}$
Work Step by Step
27.8
The digits to the right of the decimal point, 8, is the numerator of the fraction. The denominator is 10 for tenths because the rightmost digit is in the tenths place.
i.e. $27\frac{8}{10}$
= $27\frac{8\div2}{10\div2}$ (Divide both numerator and denominator by 2)
= $27\frac{4}{5}$ (Lowest Terms)