document.write( "Question 897771: Mary is 17 years old and her brother Joey is 5 years old. In how many years will Mary be just twice as old as Joey?\r
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Algebra.Com's Answer #544297 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
let’s Mary’s age be \"M\" and her brother Joey \"J\"
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\n" ); document.write( "\n" ); document.write( "Mary is 17 years old and her brother Joey is 5 years old. \r
\n" ); document.write( "\n" ); document.write( "means \"M=17\" and \"J=5\"
\n" ); document.write( "In how many years, let’s say \"x\", will Mary be just twice as old as Joey?\r
\n" ); document.write( "\n" ); document.write( "means \"M+%2Bx=2%28J%2Bx%29\".... plug in given values \r
\n" ); document.write( "\n" ); document.write( "\"17+%2Bx=2%285%2Bx%29\"...solve for \"x\"\r
\n" ); document.write( "\n" ); document.write( "\"17+%2Bx=10%2B2x\"\r
\n" ); document.write( "\n" ); document.write( "\"17+-10=2x-x\"\r
\n" ); document.write( "\n" ); document.write( "\"7+=x\"....so, in \"7\" years Mary will be \"M=17%2B7=24\" and \"J=5%2B7=12\"\r
\n" ); document.write( "\n" ); document.write( "as you can see, \"24=2%2A12\"\r
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