document.write( "Question 1195141: Javonne purchased some art supplies and paid for
\n" ); document.write( "them with a $20 bill. The cashier handed her c
\n" ); document.write( "dollars in change, which was a mistake. To fix the
\n" ); document.write( "mistake, Javonne returned $1.00 to the cashier. lf
\n" ); document.write( "she purchase price was twice the amount of change
\n" ); document.write( "that Javonne was originally given, what is the value
\n" ); document.write( "of c?
\n" ); document.write( "

Algebra.Com's Answer #827521 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
i get the following.
\n" ); document.write( "p = purchase price.
\n" ); document.write( "c = original change
\n" ); document.write( "c-1 = correct change
\n" ); document.write( "since p = 2 * the original change, then p = 2c
\n" ); document.write( "20 dollars was used to pay for the purchase price.
\n" ); document.write( "20 minus the purchase price equals the change.
\n" ); document.write( "therefore:
\n" ); document.write( "c = 20 - p
\n" ); document.write( "since p = 2c, you get:
\n" ); document.write( "c = 20 - 2c
\n" ); document.write( "solve for c to get:
\n" ); document.write( "c = 20/3
\n" ); document.write( "that's the original change.
\n" ); document.write( "the corrected change is c - 1 = 20/3 - 3/3 = 17/3.
\n" ); document.write( "you were asked what the value of c was.
\n" ); document.write( "that's the original change.
\n" ); document.write( "your solution is that the original change = c = 20/3 = 6.67 rounded to the nearest penny.
\n" ); document.write( "to confirm 6.67 as the original change equal to c, i did the following:
\n" ); document.write( "the purchase price was 14.33.
\n" ); document.write( "the original change was 6.67
\n" ); document.write( "20 - 6.67 = 13.3
\n" ); document.write( "that's 1 dollar short of the purchase price.
\n" ); document.write( "to correct, 1 dollar was given back.
\n" ); document.write( "that made the purchase price equal to 20 - 5.67 = 14.33, correcting the mistake.
\n" ); document.write( "let me know if you have any questions.
\n" ); document.write( "theo
\n" ); document.write( "
\n" );