document.write( "Question 1016673: A is 102 years younger than r. 4yrs ago r was 4x as age. How old is a now.I \n" ); document.write( "
Algebra.Com's Answer #633096 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
Kind of ridiculous but we can do it
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\n" ); document.write( "A is 102 years younger than r.
\n" ); document.write( "A = r - 102
\n" ); document.write( " 4yrs ago r was 4x as age.
\n" ); document.write( "r - 4 = 4(A - 4)
\n" ); document.write( "r - 4 = 4A - 16
\n" ); document.write( "r = 4A - 16 + 4
\n" ); document.write( "r = 4A - 12
\n" ); document.write( "from the 1st equation, replace A with (r-102)
\n" ); document.write( "r = 4(r - 102) - 12
\n" ); document.write( "r = 4r - 408 - 12
\n" ); document.write( "r = 4r - 420
\n" ); document.write( "420 = 4r - r
\n" ); document.write( "420 = 3r
\n" ); document.write( "r = 420/3
\n" ); document.write( "r = 140 yrs old
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\n" ); document.write( "How old is a now.
\n" ); document.write( "A = 140 - 102
\n" ); document.write( "A = 38 yrs old
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\n" ); document.write( "See if that checks out for the statement
\n" ); document.write( "\"4 yrs ago r was 4x A's age. \"
\n" ); document.write( "136 = 4(34) \n" ); document.write( "
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