Mashaal Masha
May walks at a speed of 3 miles per hour and runs at a speed of 5 miles per hour. She walks for $w$ hours and runs for $r$ hours for a combined total of 14 miles. Which equation represents this situation?
Difficulty: Easy
A: 

$3w+5r=14$

B: 

$\frac{1}{3}w+\frac{1}{5}r=14$

C: 

\(\frac{1}{3}w+\frac{1}{5}r=112\)

D: 

$3w+5r=112$

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