document.write( "Question 882556: Two friends start running in different directions from the same place. One heads south, while the other heads east. After 3 hours, they are 30 miles apart. How fast is each walking on average? \n" ); document.write( "
Algebra.Com's Answer #532926 by ewatrrr(24785)\"\" \"About 
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D = rt
\n" ); document.write( "Assuming the same average rate
\n" ); document.write( "Applying the Pythagorean Theorem
\n" ); document.write( " (r(3hr))^2 + (r(3hr))^2 = 30^2
\n" ); document.write( " 18r^2 = 900
\n" ); document.write( " r^2 = 50
\n" ); document.write( " r = 5√2 mph
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