1. The problem asks to use ratios to solve the previous question, but since the previous question is not provided, let's explain how to solve problems using ratios in general. 2. A ratio compares two quantities and can be written as $\frac{a}{b}$, where $a$ and $b$ are numbers. 3. To solve problems using ratios, set up a proportion where two ratios are equal: $$\frac{a}{b} = \frac{c}{d}$$ 4. Cross-multiply to solve for the unknown: $$a \times d = b \times c$$ 5. For example, if you know $\frac{a}{b} = \frac{c}{x}$, then solve for $x$ by cross-multiplying: $$a \times x = b \times c$$ 6. Then isolate $x$: $$x = \frac{b \times c}{a}$$ 7. This method allows you to find an unknown quantity when given a ratio and some known values. Since the previous question is not provided, this is a general explanation of how to use ratios to solve problems.