document.write( "Question 173634: \"I am 3 times as old as Sue is,\" Frank said to Ann. \"On the other hand, I am 15 years older than John, While Sue is 1 year younger than John. How old am I?\" \n" ); document.write( "

Algebra.Com's Answer #128499 by Mathtut(3670) $\"\"$ $\"About$

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let ages of sue frank,ann,and john: be s,f,a,and j respectively
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\n" ); document.write( "f=3s........eq 1
\n" ); document.write( "f=j+15......eq 2----->j=f-15
\n" ); document.write( "s=j-1.......eq 3
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\n" ); document.write( "take f's value from eq 1 and plug it into eq 2
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\n" ); document.write( "j=(3s)-15
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\n" ); document.write( "now take j's value and plug it into eq 3
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\n" ); document.write( "s=(3s-15)-1
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\n" ); document.write( "2s=16
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\n" ); document.write( " $\"s=8\"$
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\n" ); document.write( " $\"highlight%28f=3s=3%288%29=24%29\"$ franks age \n" ); document.write( "

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