document.write( "Question 383857: The time T necessary to make an enlargement of a photo negative varies directly as the area A of the enlargement. If 84 seconds are required to make a 3-by-4 enlargement, find the time required for a 7-by-6 enlargement.
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Algebra.Com's Answer #271775 by rfer(16322)![]() ![]() ![]() You can put this solution on YOUR website! 12/84=42/x \n" ); document.write( "12x=3528 \n" ); document.write( "x=294 sec, =4.9 minutes \n" ); document.write( " |