document.write( "Question 23107: This is a question I REALLY don't understand I hope you might be able to help me.\r
\n" ); document.write( "\n" ); document.write( "\"Carey has $2.55 made up of pennies, dimes and quarters. She has as many dimes as pennies and she ahs eighteen coins in all. How many quarters does she have?\"\r
\n" ); document.write( "\n" ); document.write( "Well I tried this way but It didn't work and I'll show you\r
\n" ); document.write( "\n" ); document.write( "Let x = pennies 0.01x
\n" ); document.write( "x = dimes 0.1x
\n" ); document.write( "18 - x = 0.25 (18 - x)\r
\n" ); document.write( "\n" ); document.write( "And I wrote as this way\r
\n" ); document.write( "\n" ); document.write( "0.01x + 0.1x + 0.25(18 - x) = $2.55\r
\n" ); document.write( "\n" ); document.write( "You think you can tell me what I did wrong?
\n" ); document.write( "

Algebra.Com's Answer #11538 by venugopalramana(3286)\"\" \"About 
You can put this solution on YOUR website!
SEE MY COMMENTS BELOW\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"Carey has $2.55 made up of pennies, dimes and quarters. She has as many dimes as pennies and she ahs eighteen coins in all. How many quarters does she have?\"\r
\n" ); document.write( "\n" ); document.write( "Well I tried this way but It didn't work and I'll show you\r
\n" ); document.write( "\n" ); document.write( "Let x = pennies...GOOD..BETTER WRITE ITS VALUE IN $= 0.01x
\n" ); document.write( "x = dimes...GOOD...AGAIN BETTER WRITE ITS VALUE IN $= 0.1x
\n" ); document.write( "18 - x = 0.25 (18 - x)...NO..NO..YOU MADE A SIMPLE MISTAKE..BETTER GO STEP BY STEP.
\n" ); document.write( "TOTAL NUMBER OF COINS =18
\n" ); document.write( "NUMBER OF DIMES =NUMBER OF PENNIES =X...SO NUMBER OF PENNIES AND DIMES =X+X=2X..HENCE
\n" ); document.write( "NUMBER OF QUARTERS =18-2X...ITS VALUE IS 0.25(18-2X)\r
\n" ); document.write( "\n" ); document.write( "And I wrote as this way\r
\n" ); document.write( "\n" ); document.write( "0.01x + 0.1x + 0.25(18 - x) = $2.55...GOOD BUT CORRECT THE MISTAKE GIVEN ABOVE\r
\n" ); document.write( "\n" ); document.write( "0.01X+0.1X+0.25(18-2X)=2.55
\n" ); document.write( "0.11X+4.5-0.5X=2.55
\n" ); document.write( "4.5-2.55=0.5X-0.11X=0.39X
\n" ); document.write( "1.95=0.39X
\n" ); document.write( "X=1.95/0.39=195/39=5
\n" ); document.write( "SO THERE ARE 5 PENNIES ,5 DIMES AND 8 QUARTERS
\n" ); document.write( "SO GOT IT ..YOU DID VERY WELL KEEP IT UP AND IMPROVE ON YOUR MISTAKES\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "You think you can tell me what I did wrong?
\n" ); document.write( "
\n" );