document.write( "Question 387664: An express train travels 150 km in the same time that a freight train travels 100 km. If the express train goes 20km per hour faster than the freight train, find the rate of each. Tnx! \n" ); document.write( "

Algebra.Com's Answer #275556 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Rate*Time=Distance
\n" ); document.write( " $\"R%2At=D\"$
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\n" ); document.write( " $\"R%5Be%5D%2At=150\"$
\n" ); document.write( " $\"t=150%2FR%5Be%5D\"$
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\n" ); document.write( " $\"R%5Bf%5D%2At=100\"$
\n" ); document.write( " $\"t=100%2FR%5Bf%5D\"$
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\n" ); document.write( " $\"150%2FR%5Be%5D=100%2FR%5Bf%5D\"$
\n" ); document.write( " $\"100R%5Be%5D=150R%5Bf%5D\"$
\n" ); document.write( " $\"R%5Be%5D=%28150%2F100%29R%5Bf%5D\"$
\n" ); document.write( " $\"R%5Be%5D=%283%2F2%29R%5Bf%5D\"$
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\n" ); document.write( " $\"R%5Be%5D=R%5Bf%5D%2B20\"$
\n" ); document.write( "Substitute,
\n" ); document.write( " $\"%283%2F2%29R%5Bf%5D=R%5Bf%5D%2B20\"$
\n" ); document.write( " $\"%281%2F2%29R%5Bf%5D=20\"$
\n" ); document.write( " $\"highlight%28R%5Bf%5D=40%29\"$ kph
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\n" ); document.write( " $\"R%5Be%5D=%283%2F2%29%2840%29\"$
\n" ); document.write( " $\"highlight%28R%5Be%5D=60%29\"$ kph \n" ); document.write( "

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