## Ratio and Proportion

Ratio and proportion problems can be solved in several ways. However, one of the easiest ways is through the use of converting them into fractions. This method works well when solving rate-related problems.

We will express the unknown tax amount as {eq}t {/eq}. To solve this problem, we will express the ratio of the tax to the concrete in both cases as equal proportions, which is given by:

{eq}\begin{align} t:1.6 &=4.65:2\\[0.2cm] \,&\Downarrow\\ \dfrac{t}{1.6}&=\dfrac{4.65}{2}\\[0.2cm] t&=\left(\dfrac{4.65}{2}\right) (1.6)\\[0.2cm] t&=\dfrac{4.65(1.6)}{2}\\[0.2cm] t&=3.72 \end{align} {/eq}

Therefore, the tax for the 1.6 tons is \$3.72.