document.write( "Question 814295: Thank you for helping me with this
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\n" ); document.write( "\n" ); document.write( "You have in stock a 30gram tube of 1% hydrocortisone cream and a 45 gram tube of 2.5% hydrocortisone cream and you need to prepare a 30 gram tube of 2% hydrocortisone. How much of each tube do you use to create this new concentration?\r
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Algebra.Com's Answer #490245 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
a+b=30,
\n" ); document.write( ".01*a+.025*b=.02*30
\n" ); document.write( "a=10., b=20.
\n" ); document.write( "10 grams of 1% and 20g of 2.5%
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