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) $1 \frac { 13 } { 20 } \text { miles per hour }$

Question

Quizplus · Accepted Answer

To find the average speed, divide the total distance by the total time. Convert mixed numbers to improper fractions: $4 \frac{5}{7} = \frac{33}{7}$ miles, $2 \frac{6}{7} = \frac{20}{7}$ hours. Average speed = $\frac{33/7}{20/7} = \frac{33}{20}$ miles per hour, which simplifies to $1 \frac{13}{20}$ miles per hour.

Solve -Ted Walks Around a Lake on a Path That 4574 \frac { 5 } { 7 }475​

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