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Answer:

The general form of a GP is a, ar, ar2, ar3 and so on. The nth term of a GP series is Tn = arn-1, where a = first term and r = common ratio = Tn/Tn-1) . The sum of infinite terms of a GP series S∞= a/(1-r) where 0< r<1. If a is the first term, r is the common ratio of a finite G.P.

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Step-by-step explanation:

Gross profit margin is calculated by subtracting cost of goods sold (COGS) from total revenue and dividing that number by total revenue.

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the image below is a mathematical representation

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