document.write( "Question 927373: A train traveling at a speed of 30 mph passes point A on its way to point B. At the same time, on a parallel track, another train traveling at a speed of 70 mph passes point B on its way to point A. If point A and point B are 300 miles apart, how far from point B will the trains meet?\r
\n" );
document.write( "\n" );
document.write( "(F) 240 mi
\n" );
document.write( "(G) 210 mi
\n" );
document.write( "(H) 150 mi
\n" );
document.write( "(J) 140 mi
\n" );
document.write( "(K) 90 mi \n" );
document.write( "
Algebra.Com's Answer #562910 by TimothyLamb(4379)![]() ![]() You can put this solution on YOUR website! relative speed of the two trains: \n" ); document.write( "70 + 30 = 100 mph \n" ); document.write( "--- \n" ); document.write( "time when the trains meet: \n" ); document.write( "s = d/t \n" ); document.write( "t = d/s \n" ); document.write( "t = 300/100 \n" ); document.write( "t = 3 hours \n" ); document.write( "--- \n" ); document.write( "distance traveled by the train that starts at point B, when the trains meet: \n" ); document.write( "d = st \n" ); document.write( "d = 70*3 \n" ); document.write( "d = 210 miles \n" ); document.write( "--- \n" ); document.write( "answer: \n" ); document.write( "(G) 210 mi \n" ); document.write( "--- \n" ); document.write( "Solve and graph linear equations: \n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php \n" ); document.write( "--- \n" ); document.write( "Solve quadratic equations, quadratic formula: \n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php \n" ); document.write( "--- \n" ); document.write( "Convert fractions, decimals, and percents: \n" ); document.write( "https://sooeet.com/math/fraction-decimal-percent.php \n" ); document.write( "--- \n" ); document.write( "Calculate and graph the linear regression of any data set: \n" ); document.write( "https://sooeet.com/math/linear-regression.php \n" ); document.write( " |