Elementary Algebra

A decorative ribbon costs 2.16 dollars a yard. To find the price per one inch, we must first convert yards to inches because we have the price in yards. The ratio which converts yards to inches is $\frac{1\ yard}{36\ inches}$. So, $\frac{2.16\ dollars}{yard}$ $\times$ $\frac{1\ yard}{36\ inches}$ = 2.16 dollars for 36 inches So, the price of 36 inches is 2.16 dollars. To find the price per one inch, we divide 2.16 by 36 So, $\frac{2.16\ dollars}{36\ inches}$ = 0.06 dollar per inch. The price of the ribbon per one inch is 0.06 dollars.