document.write( "Question 658503: a plane can travel 3120 miles in 6.5 hours with a headwind. on the return trip, the trip takes 6 hours. find the speed of the plane in still air \n" ); document.write( "
Algebra.Com's Answer #410303 by checkley79(3341)![]() ![]() ![]() You can put this solution on YOUR website! D=RT \n" ); document.write( "3120=X*6.5 \n" ); document.write( "6.5X=3120 \n" ); document.write( "X=480 MPH AGAINST THE WIND. \n" ); document.write( "3120=X*6 \n" ); document.write( "6X=3120 \n" ); document.write( "X=3120/6 \n" ); document.write( "X=520 MPH WITH THE WIND. \n" ); document.write( "(520-480)/2=900/2=450 MPH IS THE SPEED OF THE PLANE IN STILL AIR.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |