document.write( "Question 196867This question is from textbook
\n" ); document.write( ": Steve is three times as old as Theresa. In four years he willl be twice as old as she will be. How old is each now? \n" ); document.write( "
Algebra.Com's Answer #147608 by ankor@dixie-net.com(22740)\"\" \"About 
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Steve is three times as old as Theresa. In four years he will be twice as old as she will be. How old is each now?
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\n" ); document.write( "Let s = Steve's age now
\n" ); document.write( "Let t = Teresa's age now
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\n" ); document.write( "Write an equation for each statement:
\n" ); document.write( "\"Steve is three times as old as Teresa.\"
\n" ); document.write( "s = 3t
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\n" ); document.write( "\"In four years he will be twice as old as she will be.\"
\n" ); document.write( "s + 4 = 2(t+4)
\n" ); document.write( "s + 4 = 2t + 8
\n" ); document.write( "s = 2t + 8 - 4
\n" ); document.write( "s = 2t + 4
\n" ); document.write( "Substitute 3t for s and find t
\n" ); document.write( "3t = 2t + 4
\n" ); document.write( "3t - 2t = 4
\n" ); document.write( "t = 4 yrs is Teresa's age
\n" ); document.write( "then
\n" ); document.write( "s = 3(4)
\n" ); document.write( "s = 12 yrs is Steve's age
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\n" ); document.write( "Check solution in the statement
\n" ); document.write( "\"In four years he will be twice as old as she will be.\"
\n" ); document.write( "12 + 4 = 2(4 +4)\r
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