document.write( "Question 945176: at present father's age is thrice that of his son 6 years back his age was four times than that of his son .what will be the ratio of their ages after 6 years ? \n" ); document.write( "

Algebra.Com's Answer #576504 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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let f = father's present age
\n" ); document.write( "let s = son's
\n" ); document.write( ":
\n" ); document.write( "Write an equation for each statement
\n" ); document.write( ":
\n" ); document.write( "At present father's age is thrice that of his son.
\n" ); document.write( "f = 3s
\n" ); document.write( " 6 years back his age was four times than that of his son.
\n" ); document.write( "f - 6 = 4(s-6)
\n" ); document.write( "f - 6 = 4s - 24
\n" ); document.write( "f = 4s - 24 + 6
\n" ); document.write( "f = 4s - 18
\n" ); document.write( "Replace f with 3s from the 1st statement
\n" ); document.write( "3s = 4s - 18
\n" ); document.write( "18 = 4s - 3s
\n" ); document.write( "s = 18 yrs is son's age
\n" ); document.write( "then
\n" ); document.write( "3(18) = 54 yrs is father's age
\n" ); document.write( ":
\n" ); document.write( " What will be the ratio of their ages after 6 years?
\n" ); document.write( "then dad will be 60 and son will 24
\n" ); document.write( "60:24 reduced to 5:2 ratio \n" ); document.write( "

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