Answer
4.40 dollarsgal
Step-by-step explanation
In the original expression, we have the unit: rupees on the numerator, then in the conversion factor, we need rupees in the denominator so that this unit is canceled. Similarly, in the original expression, L is on the denominator, then in the conversion factor, we need L in th numerator to cancel it. That is,
[tex]\begin{gathered} \frac{72.35\text{ rupees}}{1\text{ L}}\times\frac{0.016\text{ dollars}}{1\text{ rupee}}\times\frac{3.79\text{ L}}{1\text{ gal}}= \\ \text{ Canceling units and combining numerical values:} \\ =\frac{72.53\times0.016\operatorname{\times}3.79}{1\operatorname{\times}1\operatorname{\times}1}\frac{dollars}{gal}= \\ =4.40\text{ }\frac{dollars}{gal} \end{gathered}[/tex]
