How to fix this 7% where 6% , 5% works great.

Posted by Stackfan on Stack Overflow See other posts from Stack Overflow or by Stackfan
Published on 2010-12-26T11:36:20Z Indexed on 2010/12/26 11:54 UTC
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math

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billing

Case 1 (discount 6%):

Subtotal:   750.00
Discount:   45.00
Handling cost:  24.32
21% VAT:    0.00
Total (this is the amount you will deposit):    729.32

Case 2 (discount 7%):

Subtotal:   1250.00
Discount:   87.50
Handling cost:  39.88
21% VAT:    0.00
Total (this is the amount you will deposit):    1202.38

Where i am applying this formula:

(729.32  - 0.35) / 1.034/ 0.94   =  750.00    (<<--- CORRECT ) ?

(1202.38 - 0.35) / 1.034/ 0.93   = 1250.01    (<<--- My problem why not 1250.00) ?

How to correct the 7% formula to get exactly 1250.00 ? Instead of fraction error.

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