document.write( "Question 1202190: Peter is now 12 years old and John is 3 years old. In how many years will Peter be twice as old as John? \n" ); document.write( "
Algebra.Com's Answer #836833 by mananth(16946)\"\" \"About 
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Peter is now 12 years old and John is 3 years old. In how many years will Peter be twice as old as John?\r
\n" ); document.write( "\n" ); document.write( "Let Peter's age after x years be twice that of John\r
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\n" ); document.write( "\n" ); document.write( "Peter is now 12 years old . After x years he will be 12+x years\r
\n" ); document.write( "\n" ); document.write( "John is 3 years old. After x years he will be 3+x years\r
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\n" ); document.write( "\n" ); document.write( "12+x = 2(3+x)\r
\n" ); document.write( "\n" ); document.write( "12+x = 6+2x
\n" ); document.write( "2x-x = 12-6\r
\n" ); document.write( "\n" ); document.write( "x =6 After 6 years\r
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