document.write( "Question 98413: jOHN and David are running the 1-mile race. David enters the final quarter first and is running at a rate of 18ft./sec. John enters the final quarter 3 seconds later but is running at a rate of 20 ft.sec. Who will win the race?
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document.write( "5280ft.= 1 mile \n" );
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Algebra.Com's Answer #71579 by checkley71(8403) ![]() You can put this solution on YOUR website! 1/4*5280=1320 feet ids the distance to cover. \n" ); document.write( "distance=rate*time \n" ); document.write( "1320=18*t \n" ); document.write( "t=1320/18 \n" ); document.write( "t=73.33 sec for David to finish the race. \n" ); document.write( "t=(1320/20)+3 \n" ); document.write( "t=66+3=69 seconds for John to finish the race. \n" ); document.write( "John wins by 73.33-69=7.33 seconds. \n" ); document.write( " |