document.write( "Question 815427: Jim is twelve years old. His father is three times as old. In how many years will the sum of their ages be sixty-eight? \n" ); document.write( "
Algebra.Com's Answer #490953 by TimothyLamb(4379)\"\" \"About 
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j = 12
\n" ); document.write( "f = 36
\n" ); document.write( "W(y) = (j + y) + (f + y) ?= 68
\n" ); document.write( "---
\n" ); document.write( "W(y) = (12 + y) + (36 + y) ?= 68
\n" ); document.write( "(12 + y) + (36 + y) = 68
\n" ); document.write( "48 + 2y = 68
\n" ); document.write( "2y = 20
\n" ); document.write( "---
\n" ); document.write( "y = 10
\n" ); document.write( "---
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