document.write( "Question 216049: two friends start walking in opposite directions one walks 5mph the other walks 4mph they are talking on radios with a 20mi radius how long can they talk?\r
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Algebra.Com's Answer #163195 by Alan3354(69443)\"\" \"About 
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two friends start walking in opposite directions one walks 5mph the other walks 4mph they are talking on radios with a 20mi radius how long can they talk?
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\n" ); document.write( "Going opposite directions, their speeds are added. 5+4 = 9 mph
\n" ); document.write( "They'll be 20 miles apart in 20/9 hours
\n" ); document.write( "= ~ 2.222 hours
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