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 Post subject: Sales DiscountPosted: Mon, 15 Aug 2011 16:15:29 UTC
 S.O.S. Oldtimer

Joined: Tue, 30 Dec 2008 20:37:56 UTC
Posts: 205
Location: Accra,Ghana
George bought a pair of soccer boots at a discount of 25%.

She saved \$18.
What was the sale price of the soccer boots?

Why must the answer be 54 and not 72

18/0.25 = 72

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 Post subject: Re: Sales DiscountPosted: Mon, 15 Aug 2011 16:28:54 UTC
 Moderator

Joined: Wed, 30 Mar 2005 04:25:14 UTC
Posts: 12172
Location: Austin, TX
You don't divide by the percentage, you multiply by 1- the percentage.

So if she bought two pairs at 75% the original price (i.e. 25% off) then if x is the price 2x(0.75)=2x-18 is your equation because she saved 18 dollars.

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 Post subject: Re: Sales DiscountPosted: Tue, 16 Aug 2011 15:03:23 UTC

Joined: Sat, 26 Apr 2003 22:14:40 UTC
Posts: 2064
Location: El Paso TX (USA)
Kodwo, your \$72 is the price before the discount; Shadow's formula computes the price after the discount.

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 Post subject: Re: Sales DiscountPosted: Wed, 17 Aug 2011 00:35:03 UTC
 S.O.S. Oldtimer

Joined: Tue, 30 Dec 2008 20:37:56 UTC
Posts: 205
Location: Accra,Ghana
so it's

Sales Price = List Price - Trade Discount
54 = 72 -18

Thanks to you both

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