document.write( "Question 108257: Scott is 22 years older than Sun Jung, In 7 years, Scott will be twice as old as Sun Jung. Give the current age of Scott and Sun Jung. \n" ); document.write( "
Algebra.Com's Answer #78892 by ankor@dixie-net.com(22740)\"\" \"About 
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Write an equation for each statement:
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\n" ); document.write( "Scott is 22 years older than Sun Jung,
\n" ); document.write( "S = J + 22
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\n" ); document.write( "In 7 years, we have:
\n" ); document.write( "(S + 7)
\n" ); document.write( "(J + 7)
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\n" ); document.write( "In 7 years, Scott will be twice as old as Sun Jung.
\n" ); document.write( "(S+7) = 2(J+7)
\n" ); document.write( " S + 7 = 2J + 14
\n" ); document.write( " S = 2J + 14 - 7
\n" ); document.write( " S = 2J + 7
\n" ); document.write( ":
\n" ); document.write( "Give the current age of Scott and Sun Jung.
\n" ); document.write( "Substitute (J+22) for S in the above equation and find J
\n" ); document.write( "J + 22 = 2J + 7
\n" ); document.write( "22 - 7 = 2J - J
\n" ); document.write( "J = 15 yrs now
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\n" ); document.write( "Given that S is 22 yrs older:
\n" ); document.write( "S = 15 + 22 = 37 yrs age now
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\n" ); document.write( "Check our solutions in the statement:
\n" ); document.write( "\"In 7 years, Scott will be twice as old as Sun Jung.\"
\n" ); document.write( "37 + 7 = 2(15 + 7)
\n" ); document.write( "44 = 2(22); confirms our solution
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