document.write( "Question 182293: Dan's father was forty years older when the son was 12 years old. How many years must be added to Dan's age so that he will be 8 years older than one-fourth of his father's age? \n" ); document.write( "
Algebra.Com's Answer #136867 by ankor@dixie-net.com(22740)\"\" \"About 
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Dan's father was forty years older when the son was 12 years old. How many years must be added to Dan's age so that he will be 8 years older than one-fourth of his father's age?
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\n" ); document.write( "\"Dan's father was forty years older when the son was 12 years old.\"
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\n" ); document.write( "Father's age = 12 + 40 = 52
\n" ); document.write( "Dan's age = 12
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\n" ); document.write( "How many years must be added to Dan's age so that he will be 8 years older than one-fourth of his father's age?
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\n" ); document.write( "Let x = no. of yr to be added
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\n" ); document.write( "D + x = .25F + 8
\n" ); document.write( "Substitute the ages of F and D
\n" ); document.write( "12 + x = .25(52) + 8
\n" ); document.write( "12 + x = 13 + 8
\n" ); document.write( "x = 21 - 12
\n" ); document.write( "x = 9 yrs to be added
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\n" ); document.write( "See if that is true in the statement:
\n" ); document.write( "\" 9 years must be added to Dan's age so that he will be 8 years older than one-fourth of his father's age? \"
\n" ); document.write( "12 + 9 = .25(52) + 8
\n" ); document.write( "21 = 21 \r
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