document.write( "Question 898089: A train travels from point A to B, a distance of 100 miles, at a speed of 20 mph. If it had gone two and a half times faster, how much earlier would it have arrived at B? \n" ); document.write( "
Algebra.Com's Answer #544533 by richwmiller(17219)\"\" \"About 
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100/20=5 hours
\n" ); document.write( "(2.5*20)*t=100
\n" ); document.write( "50t=100
\n" ); document.write( "t=2
\n" ); document.write( "5-2=3 hours earlier\r
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