document.write( "Question 968769: A is now three times older than B. In 5 years A will be twice as old as B will be then. Find their present ages.\r
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Algebra.Com's Answer #591930 by rothauserc(4718)\"\" \"About 
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A = 3B
\n" ); document.write( "A +5 = 2(B +5)
\n" ); document.write( "A +5 = 2B +10
\n" ); document.write( "now substitute for A = 3B
\n" ); document.write( "3B +5 = 2B +10
\n" ); document.write( "subtract 2B form both sides of =
\n" ); document.write( "B +5 = 10
\n" ); document.write( "B = 5 and A = 15
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\n" ); document.write( "check answer by substituting for A and B in the second equation
\n" ); document.write( "15 +5 = 2(5+5)
\n" ); document.write( "20 = 20
\n" ); document.write( "our answer checks
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