Question

Molly is flying from New Orleans to Salt Lake City, a distance of1,434 miles. Her one-way coach fare is $168. Compute the cost permile of her flight.a. $.10b. $.12c. $.14d. $.16

Answer 1

`c)\$0.12`

1) In this problem, let's figure out the unit rate for that given these data:

`\begin{gathered} 1434-------168 \\ 1---------x \end{gathered}`

We can find it using a direct proportion. Note the first column as miles and the second as fare.

2) So let's write down the ratios and solve them for x:

`\begin{gathered} 1434x=168 \\ (1434x)/(1434)=(168)/(1434) \\ x=(28)/(239) \\ x=0.1171\approx0.12 \end{gathered}`

Notice that we had to round it off to the nearest hundred. So the answer is c$ .12