document.write( "Question 874917: A private airplane leaves an airport
\n" );
document.write( "and flies due south at 192 mph. Two hours later, a jet
\n" );
document.write( "leaves the same airport and flies due south at 960 mph.
\n" );
document.write( "When will the jet overtake the plane? \n" );
document.write( "
Algebra.Com's Answer #527843 by mananth(16946)![]() ![]() You can put this solution on YOUR website! A private airplane leaves an airport \n" ); document.write( "and flies due south at 192 mph.\r \n" ); document.write( "\n" ); document.write( "let t be the time when it is caught up by the jet\r \n" ); document.write( "\n" ); document.write( "distance = speed * t\r \n" ); document.write( "\n" ); document.write( "=192t\r \n" ); document.write( "\n" ); document.write( " Two hours later, a jet\r \n" ); document.write( "\n" ); document.write( "for the same distance the jet takes (t-2) hours \n" ); document.write( "leaves the same airport and flies due south at 960 mph. \n" ); document.write( "d= 960(t-2)\r \n" ); document.write( "\n" ); document.write( "960(t-2)=192t\r \n" ); document.write( "\n" ); document.write( "960t-1920=192t\r \n" ); document.write( "\n" ); document.write( "960t-192t=1920 \n" ); document.write( "768t=1920\r \n" ); document.write( "\n" ); document.write( "t= 2.5 hours \n" ); document.write( "When will the jet overtake the plane? \n" ); document.write( " |