An air-conditioning unit costs $470. On December there was a discount for Christmas of 16%. Six months later, the holiday season was over so the company raised the price of the air-conditioning by 16%. How much will an air-conditioning unit cost in November?	Choose the correct choice from the following.
A) $458	B) $470	C) $472	D) $484	E) $491
Price after discount and again raising by 16%= 470 * 82/100 * 116/100   We don't really need to multiply the whole expression. The units digit of this expression will be '8' , and only option A has 8 as units digit.   Hence $458 is the answer
<result>A</result>
An air-conditioning unit costs $470. On December there was a discount for Christmas of 16%. Six months later, the holiday season was over so the company raised the price of the air-conditioning by 16%. How much will an air-conditioning unit cost in November?