document.write( "Question 75873: Melissa is driving a sports utility vehicle along the interstate at a constant speed of 55 mph. A sports car one-half mile behind her that is moving at a constant speed passes her in 60 seconds. How many miles per hour is the speed of the sports car? \n" ); document.write( "
Algebra.Com's Answer #54475 by checkley75(3666)![]() ![]() ![]() You can put this solution on YOUR website! 55mph*60 sec=distance \n" ); document.write( "55*1/60=.917 miles \n" ); document.write( "The .5 miles + the additional .917 miles says that the 1.417 miles was covered is 60 sec. \n" ); document.write( "Thus the distance is 1.417 miles in 60 sec. \n" ); document.write( "1.417=1/60X cross multiply \n" ); document.write( "x=1.417*60 \n" ); document.write( "x=85.02 mph for the speeding car. \n" ); document.write( " \n" ); document.write( " |