document.write( "Question 56902: sally is 3 times older that david in five years sally will be twice as old as david how old will sally be in 5 years \n" ); document.write( "
Algebra.Com's Answer #38630 by askmemath(368)\"\" \"About 
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\"sally is 3 times older that david\"
\n" ); document.write( "Let David's present age = X
\n" ); document.write( "Then Sally's age = 3X\r
\n" ); document.write( "\n" ); document.write( "\" in five years\"
\n" ); document.write( "David's age = X+5
\n" ); document.write( "Sally's age = 3X+5\r
\n" ); document.write( "\n" ); document.write( "\"sally will be twice as old as david\"
\n" ); document.write( "3X+5 = 2(X+5)
\n" ); document.write( "Solving this
\n" ); document.write( "3X+5 = 2X+10
\n" ); document.write( "X = 5
\n" ); document.write( "Which means David's present age = 5
\n" ); document.write( "Sally's present age = 15\r
\n" ); document.write( "\n" ); document.write( "\"how old will sally be in 5 years\"
\n" ); document.write( "15+5 = 20 years
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