Chapter 0, Problem 2PR

To determine

The total distance travelled by Luis.

Answer to Problem 2PR

  $D=7.6\text{ miles}$

Explanation of Solution

Given:

Friend’s house distance = 1.2 miles

Store’s distance from the friend’s house = 0.7 miles

Library’s distance from the store = 1.9 miles

Calculation:

Travelled distance =Friend’s house distance + Store’s distance from the friend’s house + Library’s distance from the store

  $\begin{array}{l}d=1.2+0.7+1.9\\ d=3.8\text{ miles}\end{array}$

Now, he return by same route,

Total travelled distance = $2d$

  $\begin{array}{l}D=2\times 3.8\\ D=7.6\text{ miles}\end{array}$

Conclusion:

Hence, the total distance travelled by Luis is 7.6 miles.