document.write( "Question 187170: Bob's father is 3 times old as Bob.4 years ago,he was 4 times older.How old is Bob? \n" ); document.write( "

Algebra.Com's Answer #140292 by uday1435(57) $\"\"$ $\"About$

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Let Bob's age be ‘b’ and is father's age ‘f’
\n" ); document.write( "3b = f
\n" ); document.write( "Four years ago Bob was (b – 4) years and his father was (f – 4) years
\n" ); document.write( "4(b – 4) = 4(f – 4) but f = 3b
\n" ); document.write( "So 4( b – 4) = (3b – 4)
\n" ); document.write( "4b – 16 = 3b – 4
\n" ); document.write( "So b = 16 – 4 = 12 and f = 3b = 3(12) = 36
\n" ); document.write( "Answer Bob is 12 years old and his father is 36 years old\r
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\n" ); document.write( "\n" ); document.write( "If you still require further clarifications please write to udayakumar.t.r@gmail.com \n" ); document.write( "

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