document.write( "Question 1106490: Three numbers are in the ratio 3:9:10. If 10 is added to the last number, then the three numbers form an arithmetic progression. What are the three numbers?
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Algebra.Com's Answer #721478 by josgarithmetic(39618)\"\" \"About 
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The numbers: 3x, 9x, 10x\r
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\n" ); document.write( "\n" ); document.write( "Making the arithmetic progression: 3x, 9x, 10x+10\r
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\n" ); document.write( "\n" ); document.write( "Common Difference between terms:
\n" ); document.write( "\"9x-3x=%2810x%2B10%29-9x\"
\n" ); document.write( "\"6x=10x%2B10-9x\"
\n" ); document.write( "\"6x=x%2B10\"
\n" ); document.write( "\"5x=10\"
\n" ); document.write( "\"highlight%28x=2%29\"\r
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\n" ); document.write( "\n" ); document.write( "The three numbers (original numbers): 6, 18, 20
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