document.write( "Question 504626: Nick and Scott leave opposite ends of a bike trail 13 mi apart and travel toward each other. Scott is traveling 2 mph slower than Nick. Find each of their speeds if they meet after 30 minutes. \n" ); document.write( "
Algebra.Com's Answer #339666 by htmentor(1343)![]() ![]() You can put this solution on YOUR website! Nick and Scott leave opposite ends of a bike trail 13 mi apart and travel toward each other. Scott is traveling 2 mph slower than Nick. Find each of their speeds if they meet after 30 minutes. \n" ); document.write( "================================================ \n" ); document.write( "To solve, we could consider their individual distances and speeds, but we can also solve using their RELATIVE speed. \n" ); document.write( "If s = Nick's speed, then Scott's speed = s - 2 \n" ); document.write( "The relative speed s + s - 2 = 2s - 2 \n" ); document.write( "So the two riders approaching one another is the same as one rider standing \n" ); document.write( "still and the other approaching at speed 2s - 2 \n" ); document.write( "The 13 mile distance is covered in 30 min. \n" ); document.write( "So we can solve for s using \n" ); document.write( "2s - 2 = 13 mi/0.5 h \n" ); document.write( "2s = 28 \n" ); document.write( "s = 14 mi/h \n" ); document.write( "So Scott's speed = 12 mi/h \n" ); document.write( " |