document.write( "Question 1151340: The train traveled at s meters per minute for d meters and arrived 9 minutes late to its destination. How fast should the train have travled to make it to its destination on time?
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Algebra.Com's Answer #773067 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+t+\"$ = the time in minutes for
\n" ); document.write( "the train to arrive on time
\n" ); document.write( "Let $\"+r+\"$ = speed of train in order to arrive on time
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\n" ); document.write( " $\"+d+=+s%2A%28+t+%2B+9+%29+\"$
\n" ); document.write( " $\"+d+=+s%2At+%2B+9s+\"$
\n" ); document.write( " $\"+s%2At+=+d+-+9s+\"$
\n" ); document.write( " $\"+t+=+%28+d+-+9s+%29%2Fs+\"$
\n" ); document.write( "I can say:
\n" ); document.write( " $\"+d+=+r%2A%28+d+-+9s+%29%2Fs+\"$
\n" ); document.write( " $\"+r+=+d%2As+%2F+%28%28+d+-+9%2As+%29%29+\"$
\n" ); document.write( " $\"+r+=+d+%2F+%28%28+d%2Fs+-+9+%29%29+\"$ answer
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\n" ); document.write( "check:
\n" ); document.write( "The new time is $\"+d%2Fs+-+9+\"$
\n" ); document.write( "( to arrive on time )
\n" ); document.write( "The is 9 min less than the previous time as it should be.\r
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