document.write( "Question 581952: How fast is a car going if it goes a mile in 27 seconds \n" ); document.write( "
Algebra.Com's Answer #371892 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! 60 seconds = 1 min\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "1 second = 1/60 min\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "27 seconds = 27/60 min\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "27 seconds = 9/20 min\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "----------------------------\r \n" ); document.write( "\n" ); document.write( "60 min = 1 hr\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "1 min = 1/60 hr\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "9/20 min = (9/20)*(1/60) hr\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "9/20 min = 9/1200 hr\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "9/20 min = 3/400 hr\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So this means that 27 seconds = 3/400 hours\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-----------------------------------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "d = rt\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "1 = r(3/400)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "1*400 = 3r\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "400 = 3r\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "400/3 = r\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "r = 400/3\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "r = 133.33 mph\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So the car is going roughly 133.33 mph \n" ); document.write( " |