document.write( "Question 844457: The phone case you want to buy is marked down 30%, and you have a 25% off coupon. You pay $42.00. Can this equation be used to find the original price of the phone case? If so, what is the original price of the item? Explain. \r
\n" ); document.write( "\n" ); document.write( "3/4 (0.7c) = 42
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #508793 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Yes.
\n" ); document.write( "The original price is \"c\".
\n" ); document.write( "30% mark down means, your cost is now \"c%281-30%2F100%29=c%281-0.3%29=0.7c\"
\n" ); document.write( "The 25% off coupon works the same way. \"0.7c%281-25%2F100%29=0.75%280.7c%29=%283%2F4%29%280.7c%29\"
\n" ); document.write( "So if you paid $42 for it.
\n" ); document.write( "\"%283%2F4%29%280.7%29c=42\"
\n" ); document.write( "To find \"c\",
\n" ); document.write( "\"c=%2842%284%2F3%29%29%2F%280.7%29\"
\n" ); document.write( "Work that out and you'll have the original price.
\n" ); document.write( "
\n" );