Answer:
0.117 mile/minute
Explanation:
We are given that a runner ran distance=
of a mile.
Time taken by runner=20 minutes.
We have to find the average speed of runner.
Average speed =
![(distance)/(time)](https://img.qammunity.org/2020/formulas/mathematics/college/h1lbg96lj5sgwdrs9x8wfv75abdqqrns6s.png)
Distance=
![2(1)/(3)=(7)/(3)miles](https://img.qammunity.org/2020/formulas/mathematics/middle-school/uglu2knekg742x24x1kwx7wat5vsho7iyi.png)
Substitute the values in the formula then, we get
Average speed=
![((7)/(3))/(20)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/nzwij3qzgho4jyofaj58ybfr4jb0888qi5.png)
Average speed=
![(7)/(3* 20)=(7)/(60) mile/minute](https://img.qammunity.org/2020/formulas/mathematics/middle-school/q3lj2biifkwhc72aibs17szjoulz4ez3xq.png)
Average speed=
mile/minute