document.write( "Question 273595: Joe traveled against the wind in a small plane for 3 hours. The return trip with the wind took 2.8 hours. What is the speed of the wind if the speed of the plane in still air is 180 mph? \n" ); document.write( "
Algebra.Com's Answer #199807 by mananth(16946)![]() ![]() You can put this solution on YOUR website! Joe traveled against the wind in a small plane for 3 hours. The return trip with the wind took 2.8 hours. What is the speed of the wind if the speed of the plane in still air is 180 mph? \r \n" ); document.write( "\n" ); document.write( "Let the speed of the wind be x\r \n" ); document.write( "\n" ); document.write( "Against the wind the speed will be 180-x\r \n" ); document.write( "\n" ); document.write( "Distance traveled will be time * speed \n" ); document.write( "=3*(180-x)\r \n" ); document.write( "\n" ); document.write( "With wind the speed will be 180 +x\r \n" ); document.write( "\n" ); document.write( "Distance traveled will be = 2.8* (180+x)\r \n" ); document.write( "\n" ); document.write( "The distance traveled will be same\r \n" ); document.write( "\n" ); document.write( "2.8*(180+x)= 3*(180-x)\r \n" ); document.write( "\n" ); document.write( "504+2.8x=540-3x\r \n" ); document.write( "\n" ); document.write( "2.8x+3x=540-504\r \n" ); document.write( "\n" ); document.write( "5.8x=36\r \n" ); document.write( "\n" ); document.write( "x= 6.2 mph is the speed of the wind.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |