document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=963834>Question 963834</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mr. Santana is 3 times his daughter Kara's age. Ten years ago, Mr. Santana was 7 times Kara's age.<BR>\n" );
document.write( "Which system of equations could you solve to find Mr. Santana's current age? f = father's age and d = daughter's age<BR>\n" );
document.write( " A) 3f = d ; f - 10 = 7d - 10<BR>\n" );
document.write( " B) f = 3d ; f + 10 = 7(d + 10)<BR>\n" );
document.write( " C) f = d/3 ; f + 10 = 7d - 10<BR>\n" );
document.write( " D) f = 3d ; f - 10 = 7(d - 10) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #588813 by </B><A HREF=/tutors/aboutme.mpl?userid=fcabanski><B>fcabanski(1391)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fcabanski><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=588813\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Father (f) is (=) 3 times the daughter's (3d) age.  f=3d must be one of the equations.  That eliminates A and C.<P><BR>\n" );
document.write( "10 years ago means 10 must be subtracted from things.  That eliminates B.  <P><BR>\n" );
document.write( "The correct answer is 10.  Father's age 10 years ago is f-10 and daughter's age 10 years ago is d-10.  He was 7 times her age so f-10=7(d-10). </SPAN>\n" );
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