document.write( "Question 514685: Three times Sally's age now exceeds 5 times John's age by 15. In 10 years, twice Sally's age then will be 20 less than 4 times John's age then. How old will they be 15 years from now?\r
\n" ); document.write( "\n" ); document.write( "The equations I have are this:\r
\n" ); document.write( "\n" ); document.write( "1st sentence: 3S = 5J +15\r
\n" ); document.write( "\n" ); document.write( "2nd sentence: 2(S + 10) = 4(J + 10) + 20\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
Algebra.Com's Answer #343586 by ankor@dixie-net.com(22740)\"\" \"About 
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Three times Sally's age now exceeds 5 times John's age by 15. In 10 years, twice Sally's age then will be 20 less than 4 times John's age then. How old will they be 15 years from now?
\n" ); document.write( "The equations I have are this:
\n" ); document.write( ":
\n" ); document.write( "1st sentence: 3S = 5J + 15
\n" ); document.write( "this is right
\n" ); document.write( ":
\n" ); document.write( "2nd sentence: 2(S + 10) = 4(J + 10) + 20
\n" ); document.write( "this equation should be
\n" ); document.write( " 2(S + 10) = 4(J + 10) - 20
\n" ); document.write( "2s + 20 = 4j + 40 - 20
\n" ); document.write( "2s + 20 = 4j + 20
\n" ); document.write( "2s = 4j + 20 - 20
\n" ); document.write( "2s = 4j
\n" ); document.write( "simplify, divide by 2
\n" ); document.write( "s = 2j
\n" ); document.write( "now substitute 2j for s in the 1st equation \n" ); document.write( "
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