document.write( "Question 662807: hi......can you please help me how to solve this problem.? \"Steve is twice as old as Sylvie. Sylvie is three years older than Jacob. 4 years ago, Sylvie was twice Jacob's age. How old is Sylvie?\"... I really tried to solve this for so many times but still i can't get the correct answer..please help me. \n" ); document.write( "
Algebra.Com's Answer #412489 by ankor@dixie-net.com(22740)\"\" \"About 
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Let t = Steve's present age
\n" ); document.write( "Let s = Sylvie's present age
\n" ); document.write( "Let j = Jacob's present age
\n" ); document.write( ":
\n" ); document.write( "Write an equation for each statement:
\n" ); document.write( ":
\n" ); document.write( "Steve is twice as old as Sylvie.
\n" ); document.write( "t = 2s
\n" ); document.write( ":
\n" ); document.write( "Sylvie is three years older than Jacob.
\n" ); document.write( "s = j + 3
\n" ); document.write( ":
\n" ); document.write( "4 years ago, Sylvie was twice Jacob's age.
\n" ); document.write( "s - 4 = 2(j - 4)
\n" ); document.write( "s - 4 = 2j - 8
\n" ); document.write( "s = 2j - 8 + 4
\n" ); document.write( "s = 2j - 4
\n" ); document.write( "Replace s with (j+3), from the 2nd statement.
\n" ); document.write( "j + 3 = 2j - 4
\n" ); document.write( "3 + 4 = 2j - j
\n" ); document.write( "7 = j
\n" ); document.write( ":
\n" ); document.write( "Jacob is 7 yrs old
\n" ); document.write( ":
\n" ); document.write( "How old is Sylvie?
\n" ); document.write( "s = j + 3
\n" ); document.write( "s = 7 + 3
\n" ); document.write( "s = 10 yrs old is Sylvie
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Confirm this in the statement:
\n" ); document.write( "\"4 years ago, Sylvie was twice Jacob's age.\"
\n" ); document.write( "10 - 4 = 2(7 - 4)
\n" ); document.write( "6 = 2(3)
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Poor Steve seems to have been totally left out, but he is 20 yrs old
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