document.write( "Question 604533: A man walks for 12 km at x km/h and then jogs for another 12 km at (x + 2) km/h. He travels for a total of 5 hours. Find the value of x. \n" ); document.write( "
Algebra.Com's Answer #381255 by alicealc(293)![]() ![]() ![]() You can put this solution on YOUR website! speed = distance/time \n" ); document.write( "so, time = distance/speed\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "0 = (5x + 6)*(x - 4) \n" ); document.write( "5x + 6 = 0 or x - 4 = 0 \n" ); document.write( "5x = -6 or x = 4 \n" ); document.write( "5x = -6/5 or x = 4 \n" ); document.write( "because the speed can't be a negative number, we choose x = 4\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "so, x = 4\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |