document.write( "Question 154025This question is from textbook Algebra and Trigonometry Structure and Method book 2
\n" ); document.write( ": I have been working on this math problem for awhile now and I can't figure it out. I was wondering if someone could help me? Please and Thank you!! I would deeply appreciate it.\r
\n" ); document.write( "\n" ); document.write( "In a walkathon to raise money for a charity, Elisa walked a certain distance at 5 mi/h and then jogged that distance at 8 mi/h. Her total walking and jogging was 2 h and 15 min. How many miles long was the walkathon. (hint: time=distance over rate)
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Algebra.Com's Answer #113366 by checkley77(12844)\"\" \"About 
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x/5+x/8=2.25
\n" ); document.write( "(8x+5x)/40=2.25
\n" ); document.write( "13x/40=2.25
\n" ); document.write( "13x=90
\n" ); document.write( "x=90/13
\n" ); document.write( "x=6.923 miles for walk & the jog distance.
\n" ); document.write( "proof:
\n" ); document.write( "6.923/5+6.923/8=2.25
\n" ); document.write( "1.38+.87=2.25
\n" ); document.write( "2.25=2.25
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