document.write( "Question 387761: Find the sum of the infinite geometric series, if possible.
\n" ); document.write( " 120 + 60 + 30 + . . . \n" ); document.write( "

Algebra.Com's Answer #274142 by Earlsdon(6294) $\"\"$ $\"About$

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Recall that the sum (S) of an infinite geometric series with first term, $\"a%5B1%5D\"$ , and common ratio, r,is given by:
\n" ); document.write( " $\"S+=+a%5B1%5D%2F%281-r%29\"$ Here, $\"a%5B1%5D+=+120\"$ and $\"r+=+1%2F2\"$ so...
\n" ); document.write( " $\"S+=+120%2F%281-1%2F2%29\"$
\n" ); document.write( " $\"S+=+120%2F%281%2F2%29\"$
\n" ); document.write( " $\"S+=+120%2A2\"$
\n" ); document.write( " $\"S+=+240\"$ \n" ); document.write( "

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