document.write( "Question 771290: Ian spent 3/5 of his money on a book and 1/4 of the remainder on a pen. If the book costs 350 pesos more than the pen, how much money did he have at first? \n" ); document.write( "
Algebra.Com's Answer #470176 by josmiceli(19441)\"\" \"About 
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Let \"+x+\" = the amount of money he had at first
\n" ); document.write( "Ian spent \"+%283%2F5%29%2Ax+\" on a book
\n" ); document.write( "\"+%282%2F5%29%2Ax+\" is left
\n" ); document.write( "He spent \"+%281%2F4%29%2A%282%2F5%29%2Ax+=+%281%2F10%29%2Ax+\" on a pen
\n" ); document.write( "-----------------
\n" ); document.write( "\"+%283%2F5%29%2Ax+=+%28+1%2F10+%29%2Ax+%2B+350+\"
\n" ); document.write( "\"+%286%2F10%29%2Ax+-+%281%2F10%29%2Ax+=+350+\"
\n" ); document.write( "\"+.5x+=+350+\"
\n" ); document.write( "\"+x+=+700+\"
\n" ); document.write( "He had 700 pesos
\n" ); document.write( "---------------
\n" ); document.write( "check:
\n" ); document.write( "The pen costs \"+%281%2F10%29%2A700+=+70+\"
\n" ); document.write( "The book costs \"+%283%2F5%29%2A700+=+420+\"
\n" ); document.write( "\"+70+%2B+420+=+490+\"
\n" ); document.write( "-------------------
\n" ); document.write( "There is \"+x+%2A%28+1+-+%28+6%2F10+%2B+1%2F10+%29+%29+=+%283%2F10%29%2Ax+\"
\n" ); document.write( "\"+%283%2F10%29%2A700+=+210+\"
\n" ); document.write( "and
\n" ); document.write( "\"+490+%2B+210+=+700+\"
\n" ); document.write( "OK
\n" ); document.write( "
\n" );