If 2994 ÷ 14.5 = 172, then 29.94 ÷ 1.45 = ?

Answer: Option C

$$\begin{array}{rl}& \frac{29.94}{1.45}\\ & =\frac{299.4}{14.5}\end{array}$$
  $$=\frac{2994}{14.5}\times \frac{1}{10}$$    [Here, Substitute 172 in the place of $$\frac{2994}{14.5}$$ ]
$$\begin{array}{rl}& =\frac{172}{10}\\ & =17.2\end{array}$$