document.write( "Question 880116: Blaise rode hi bike to him friend elroy's house, which was 15 miles away. After he had been riding for half an hour, he got a flat tire. He walked his bike the rest of the way. The total trip took him 3 hours. if his walking rate was one-fourth as fast as his riding rate, how fast did he ride? \n" ); document.write( "
Algebra.Com's Answer #531236 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Blaise rode hi bike to him friend elroy's house, which was 15 miles away. \n" ); document.write( " After he had been riding for half an hour, he got a flat tire. \n" ); document.write( " He walked his bike the rest of the way. \n" ); document.write( " The total trip took him 3 hours. \n" ); document.write( " if his walking rate was one-fourth as fast as his riding rate, how fast did he ride? \n" ); document.write( ": \n" ); document.write( "let w = his walking speed \n" ); document.write( "then \n" ); document.write( "4w = his riding speed \n" ); document.write( ": \n" ); document.write( "From the information given we know that he rode for .5 hrs, therefore: \n" ); document.write( "He walked 2.5 hrs \n" ); document.write( ": \n" ); document.write( "Write a distance equation; dist = time * speed \n" ); document.write( "walk dist + ride dist = 15 mi \n" ); document.write( "2.5w + .5(4w) = 15 \n" ); document.write( "2.5w + 2w = 15 \n" ); document.write( "4.5w = 15 \n" ); document.write( "w = 15/4.5 \n" ); document.write( "w = 3 \n" ); document.write( "then \n" ); document.write( "3.333 * 4 = 13 \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check this out, find how far he biked and how far he walked \n" ); document.write( ".5 * 13.333 = 6.67 mi \n" ); document.write( "2.5 * 3.333 = 8.33 mi \n" ); document.write( "--------------------- \n" ); document.write( "total dist: 15.00 mi \n" ); document.write( " \n" ); document.write( " |