document.write( "Question 921359: I really need your help in solving this problem. I appreciate your time and efforts. Have a terrific evening :) Here is the question?\r
\n" ); document.write( "\n" ); document.write( "Comparing travel. A plane can fly 300 miles in the same time as it takes a car to go 120 miles. If the car travels 90 mph slower than the plane, find the speed of the plane?\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #558944 by josgarithmetic(39618)\"\" \"About 
You can put this solution on YOUR website!
RT=D rate time distance, basic rule for uniform rates of travel.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "_____________rate__________time_________distance
\n" ); document.write( "PLANE_________r_____________t____________\"300=rt\"
\n" ); document.write( "CAR_________r-90____________t____________\"120=%28r-90%29t\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "This data table is filled to show two equations in the two unknowns, r and t, using RATE*TIME=DISTANCE. You need to perform the necessary algebraic steps to solve for r and t. You may need to use two substitutions, and you may find a quadratic equation resulting in the process.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Okay, I saw your latest message; but TRY solving the system. The process is simpler than I thought. No need for any quadratic in the process.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Do that solving properly and you should find \"t=2\";
\n" ); document.write( "\"r=150\";
\n" ); document.write( "and \"r-90=60\".
\n" ); document.write( "
\n" );