<p>$$\displaystyle 1-\prod_i(1-d_i)$$ should give you the answer, with the discounts treated as fractions, so for example $10\%$ being $0.1$ </p>

CC BY-SA 3.0
2016-09-13T11:04:06.013Z
This is not really the issue, but is 0.1 a fraction? (Is 1.0 also a fraction? It can be written as the ratio of numerator and nominator.)
Giskard
CC BY-SA 3.0
2016-09-13T15:46:31.607Z
@denesp To me $0.1$ is a decimal fraction equivalent to $10\%$ and $\frac1{10}$.  Whether $1$ or $100\%$ or $\frac11$ is too hardly matters, as that discount means that the product is free
Henry
CC BY-SA 3.0
2016-09-13T07:43:06.187Z
2016-09-13T07:43:06.187Z
Henry
<p>what is the formula to calculate an effective discount rate of Discount Series? For EX, If Price of Product A is $X and Discount Series is given like 10%,20%,30%,5%,2%. How can we calculate effective discount of this discount series?</p>

<p><a href="https://answers.yahoo.com/question/index?qid=20110703053015AANbTBg" rel="nofollow">https://answers.yahoo.com/question/index?qid=20110703053015AANbTBg</a></p>

<p>I found something here, but searching for a generalized formula for N number of Discount Series.
Thank you</p>

<discount>
Formula for Effective Discount Rate of Discount Rate Series
Nishant Goswami
# Formula for Effective Discount Rate of Discount Rate Series

(Asked by: username_0 on 2016-09-12)

what is the formula to calculate an effective discount rate of Discount Series? For EX, If Price of Product A is $X and Discount Series is given like 10%,20%,30%,5%,2%. How can we calculate effective discount of this discount series?

<https://answers.yahoo.com/question/index?qid=20110703053015AANbTBg>

I found something here, but searching for a generalized formula for N number of Discount Series.
Thank you

**Tags:** discount


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## 1 answers

### Answer by username_1 on 2016-09-13. Score: 1

$$\displaystyle 1-\prod\_i(1-d\_i)$$ should give you the answer, with the discounts treated as fractions, so for example $10\%$ being $0.1$

> **Comments:**
> **username_2**: This is not really the issue, but is 0.1 a fraction? (Is 1.0 also a fraction? It can be written as the ratio of numerator and nominator.)  
> **username_1**: @denesp To me $0.1$ is a decimal fraction equivalent to $10\%$ and $\frac1{10}$.  Whether $1$ or $100\%$ or $\frac11$ is too hardly matters, as that discount means that the product is free  

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