document.write( "Question 403988: Elena has $240 in the bank. She withdraws %15 each week to pay for piano lessons. How many lessons can she afford with her savings? Write an equation. \n" ); document.write( "

Algebra.Com's Answer #285568 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"n\"$ = lesson number starting with $\"n=1\"$ on 1st week
\n" ); document.write( " $\"240+-+.15%2A240%2An\"$ = how much she has left after $\"n\"$ weeks
\n" ); document.write( "Make this equal to zero which means she has used up all of savings
\n" ); document.write( " $\"240+-+.15%2A240%2An+=+0\"$
\n" ); document.write( " $\"36n+=+240\"$
\n" ); document.write( " $\"n+=+6.667\"$
\n" ); document.write( "She can afford 6 lessons \n" ); document.write( "

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