document.write( "Question 720571: An engine repair cost a truck owner $1,406 in parts and labor. If the parts were $670 and the mechanic charged $46 per hour, how many hours did the repair take? \n" ); document.write( "

Algebra.Com's Answer #441880 by josmiceli(19441) $\"\"$ $\"About$

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$1,406 in parts and labor
\n" ); document.write( "Let $\"+t+\"$ = hours of labor
\n" ); document.write( " $\"+46t+%2B+670+=+1406+\"$
\n" ); document.write( " $\"+46t+=+1406+-+670+\"$
\n" ); document.write( " $\"+46t+=+736+\"$
\n" ); document.write( " $\"+t+=+16+\"$
\n" ); document.write( "The repair took 16 hrs\r
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