document.write( "Question 362697: Mr. Moby is 2 times as old as his nephew. 25 years ago their ratio was 3:1. How old long until Moby is 100? \n" ); document.write( "

Algebra.Com's Answer #258500 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"m\"$ = Mr Moby's age now
\n" ); document.write( "Let $\"n\"$ = Nephew's age now
\n" ); document.write( "given:
\n" ); document.write( "(1) $\"m+=+2n\"$
\n" ); document.write( "(2) $\"%28m+-+25%29%2F%28n+-+25%29+=+3%2F1\"$
\n" ); document.write( "Substitute (1) in (2)
\n" ); document.write( "(2) $\"%282n+-+25%29%2F%28n+-+25%29+=+3\"$
\n" ); document.write( " $\"2n+-+25+=+3n+-+75\"$
\n" ); document.write( " $\"n+=+50\"$
\n" ); document.write( " $\"m+=+2n\"$
\n" ); document.write( " $\"m+=+100\"$
\n" ); document.write( "Moby is 100 now \n" ); document.write( "

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