document.write( "Question 1054035: Road A is twice as long as Road B. Road C is 3.5 km shorter than three times the length of Road B. If the total length of the three roads is 47.5 km, Which road is the longest?
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Algebra.Com's Answer #669645 by Fombitz(32388) $\"\"$ $\"About$

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$\"A=2B\"$
\n" ); document.write( " $\"C=3B-3.5\"$
\n" ); document.write( " $\"A%2BB%2BC=47.5\"$
\n" ); document.write( "Substituting,
\n" ); document.write( " $\"2B%2BB%2B3B-3.5=47.5\"$
\n" ); document.write( " $\"6B=51\"$
\n" ); document.write( " $\"B=51%2F6\"$
\n" ); document.write( " $\"B=17%2F2\"$ $\"km\"$
\n" ); document.write( "So then,
\n" ); document.write( " $\"A=2%2817%2F2%29\"$
\n" ); document.write( " $\"A=17\"$ $\"km\"$
\n" ); document.write( "and
\n" ); document.write( " $\"C=3%2817%2F2%29-3.5\"$
\n" ); document.write( " $\"C=51%2F2-7%2F2\"$
\n" ); document.write( " $\"C=44%2F2\"$
\n" ); document.write( " $\"C=22\"$ $\"km\"$ \n" ); document.write( "

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