Solve
-Ted Walks Around a Lake on a Path That $4 \frac { 5 } { 7 }$

Multiple Choice

Solve.
-Ted walks around a lake on a path that isis $4 \frac { 5 } { 7 }$ mi miles long. It takes himm $2 \frac { 6 } { 7 }$ hours to hours to complete his walk. What is his average speed (in miles per hour) ?

A) $1 \frac { 14 } { 20 } \text { miles per hour }$
B) $2 \frac { 13 } { 20 } \text { miles per hour }$
C) $1 \frac { 13 } { 19 } \text { miles per hour }$
D) $1 \frac { 13 } { 20 } \text { miles per hour }$