document.write( "Question 282321: A jogger started a course at 4.5 mph. A cyclist started the same course 1 hour later at an average speed of 14 mph. How long after the jogger started did the cyclist take over the jogger? Round to the nearest tenth of an hour. \n" ); document.write( "
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A jogger started a course at 4.5 mph. A cyclist started the same course 1 hour later at an average speed of 14 mph. How long after the jogger started did the cyclist take over the jogger? Round to the nearest tenth of an hour.\r
\n" ); document.write( "\n" ); document.write( "let the cyclist meet the jogger at a distance x from the start\r
\n" ); document.write( "\n" ); document.write( "He starts after 1 hour after the jogger starts\r
\n" ); document.write( "\n" ); document.write( "so jogger would have traveled 4.5 miles by that time.\r
\n" ); document.write( "\n" ); document.write( "distance traveled by jogger when cyclist meets him will be x-4.5 miles\r
\n" ); document.write( "\n" ); document.write( "the time they travel after cyclist starts is the same.\r
\n" ); document.write( "\n" ); document.write( "time taken by jogger = x-4.5 / 4.5 \r
\n" ); document.write( "\n" ); document.write( "time taken by cyclist = x/14\r
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\n" ); document.write( "\n" ); document.write( "x/14 = x-4.5 /4.5\r
\n" ); document.write( "\n" ); document.write( "4.5x/14 = x-4.5\r
\n" ); document.write( "\n" ); document.write( "4.5x = 14(x-4.5)\r
\n" ); document.write( "\n" ); document.write( "4.5x= 14x- 63\r
\n" ); document.write( "\n" ); document.write( "-9.5x=-63\r
\n" ); document.write( "\n" ); document.write( "x= -63/-9.5\r
\n" ); document.write( "\n" ); document.write( "x=6.6 miles the distance they meet from the start\r
\n" ); document.write( "\n" ); document.write( "Time taken by jogger to jog (6.6-4.5) = 2.1 miles = 2.1/4.5= 0.46 hours\r
\n" ); document.write( "\n" ); document.write( "the cyclist meets the jogger after 1.46 hours after the jogger started\r
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