document.write( "Question 948556: graham practiced piano for 135 minutes this morning. He practiced for 65 more minutes this afternoon. Altogether, Graham practiced 10 times longer today than he practiced yesterday. How many minutes did graham practice piano yesterday? \n" ); document.write( "
Algebra.Com's Answer #578991 by macston(5194)\"\" \"About 
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Today: 135 min+65 min=200 minutes
\n" ); document.write( "Yesterday: Today/10=(200 minutes/10)=20 minutes
\n" ); document.write( "ANSWER: Yesterday, Graham practiced piano for 20 minutes.
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