document.write( "Question 91662: A mother is 30 years older than her daughter. Five years ago she was four times as old as her daughter. How old are they now? \n" ); document.write( "
Algebra.Com's Answer #66572 by ankor@dixie-net.com(22740)\"\" \"About 
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Write an equation representing each statement
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\n" ); document.write( "\"A mother is 30 years older than her daughter.\"
\n" ); document.write( "M = D + 30
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\n" ); document.write( "\"Five years ago she was four times as old as her daughter.\"
\n" ); document.write( "(M-5) = 4(D-5)
\n" ); document.write( "Simplify:
\n" ); document.write( "M - 5 = 4D - 20
\n" ); document.write( "M = 4D - 20 + 5
\n" ); document.write( "M = 4D - 15
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\n" ); document.write( " How old are they now?
\n" ); document.write( "4D - 15 = M
\n" ); document.write( "Substitute (D+30) for M in above equation, find D
\n" ); document.write( "4D - 15 = D + 30
\n" ); document.write( "4D - D = 30 + 15
\n" ); document.write( "3D = 45
\n" ); document.write( "D = 45/3
\n" ); document.write( "D = 15 yrs old is the daughter
\n" ); document.write( "M = 15 + 30 = 45 yrs old is the mom
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\n" ); document.write( "Check solution using the statement:
\n" ); document.write( " \"Five years ago she was four times as old as her daughter.\"
\n" ); document.write( " 45 - 5 = 4(15-5)
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\n" ); document.write( "Did I make this understandable to you?
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