A recipe calls for sugar and flour in the ratio of 2:3. If you have 10 cups of flour, how many cups of sugar do you need to maintain the same ratio?
Let the amount of sugar needed be represented as $s$ and that of flour as $f$. The ratio is given by:
$$\frac{s}{f} = \frac{2}{3}$$
Using this information, compute the required amount of sugar.