document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1173501>Question 1173501</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Antoine looks after children.  Every week, he sets aside $ 30 to buy a computer that is priced at $ 325 before taxes.  Knowing that the store offers a 20% reduction on the regular price and that the taxes are 15%,<BR>\n" );
document.write( " after how many weeks will Antoine be able to buy his computer? </SPAN>\n" );
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document.write( "The 20% price reduction multiplies the cost by a factor of (100%-20%=80%), or 0.8.<br><BR>\n" );
document.write( "The 15% added tax multiplies the cost by a factor of (100%+15%=115%), or 1.15.<br><BR>\n" );
document.write( "The price with taxes is going to be the original price, multiplied by those two factors:<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=325%280.8%29%281.15%29+=+299 ALIGN=MIDDLE  ALT=\"325%280.8%29%281.15%29+=+299\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "Setting aside $30 a week for the purchase, the number of weeks required will be 299/30 = 9.97.  The answer must of course be rounded up to the next whole number, so 10 weeks.<br><BR>\n" );
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