document.write( "Question 741756: The ratio of kwame's sge to derrick's age is 3:4. Two yearrs ago their average age was 12years. How old is kwame now?\r
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Algebra.Com's Answer #452189 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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The ratio of kwame's sge to derrick's age is 3:4.
\n" ); document.write( " Two years ago their average age was 12 years. How old is kwame now? :
\n" ); document.write( ":
\n" ); document.write( "let x = the multiplier
\n" ); document.write( "then
\n" ); document.write( "3x = k's age
\n" ); document.write( "4x = d's age
\n" ); document.write( "\"Two yrs ago their average age was 12years. \"
\n" ); document.write( " $\"%28%283x-2%29%2B%284x-2%29%29%2F2\"$ = 12
\n" ); document.write( "multiply both sides by 2 and combine like terms
\n" ); document.write( "7x - 4 = 24
\n" ); document.write( "7x = 24 + 4
\n" ); document.write( "7x = 28
\n" ); document.write( "x = 28/7
\n" ); document.write( "x = 4
\n" ); document.write( "then
\n" ); document.write( "3*4 = 12 yrs is k's present age \n" ); document.write( "

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