document.write( "Question 745164: tyler is 20 years older than shane. in 5 years, shane will be half as old as tyler is then. use 2 variables to find their present ages. \n" ); document.write( "
Algebra.Com's Answer #453751 by stanbon(75887)\"\" \"About 
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tyler is 20 years older than shane. in 5 years, shane will be half as old as tyler is then. use 2 variables to find their present ages.
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\n" ); document.write( "Equations:
\n" ); document.write( "t = s + 20
\n" ); document.write( "s+5 = (1/2)(t+5)
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\n" ); document.write( "Substitute for \"t\" and solve for \"s\":
\n" ); document.write( "s+5 = (1/2)(s+25)
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\n" ); document.write( "2s + 10 = s+25
\n" ); document.write( "s = 15 (Shane's age now)
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\n" ); document.write( "Solve for \"t\":
\n" ); document.write( "t = s + 20
\n" ); document.write( "t = 35 (Tyler's age now)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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