View Full Version : Math Teaser for you

03-24-2006, 08:27 PM
See if you can figure this out, I can not:

Ok, I had a customer that wanted to pre-pay today for their two properties for applications. Since they were a chamber member they got a 10% discount off the price, and also since they pre-pay I give all pre-pays a 5% discount. Now follow closely, or I might lose you:

Property 1:
$281.25 Sub-Total
$28.13 (10% member discount)
$253.12 Total Price for Property 1

Property 2:
$187.64 Sub-total
$18.76 (10% member discount)
$168.88 Total Price for Property 2

$422.00 Total Price for Both properties
$21.10 (5% Pre-Pay Discount)
$400.90 Final Total Price for both properies

Now this is where it gets confusing. I wanted to show both discounts on the customers invoice. I figure that I should show a 15% discount (10% for member discount, and 5% for pre-pay). But this is the problem that occurs.

$468.89 Total Price for Properties before discounts
$70.33 (15% discount total: both pre-pay and member)
$398.56 Total Price

Now compare the two prices $398.56, and $400.90. What happened here??? How come I can not get the same price when applying the discounts two different ways?

03-24-2006, 09:31 PM
LOL good question.

Are you taking (price) * 10% off and then after that
taking the price you get * 5 % off?

In the first example.

If you are, you not taking the % off together and therefore you are taking 5% off a lesser price. Which would give you a different number.