Chapter 11.7, Problem 3STP

For Exercises 1-4, choose the correct letter,

A trip from Ohio to New York is 529 mi. What equation shows the time, t, it takes to go by car if r is the average speed during the trip? $At=\frac{529}{t}Bt=529rCr=529tDt=\frac{r}{529}$

To determine

To choose : the correct option

Answer to Problem 3STP

The correct option is (A) $t=\frac{529}{r}$

Explanation of Solution

Given information : A trip from Ohio to New York is $529mi$ the time $t$ , it takes to go car if $r$ is the average speed during the trip

Trip distance $529mi$

  $\begin{array}{l}\text{speed=}\frac{\text{distance}}{\text{time}}\\ \text{time=}\frac{\text{distance}}{\text{speed}}\\ t=\frac{529}{r}\end{array}$