MHB Unexpected Profits: Investigating Extra Tea in 200g Packets

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A tea company aims to sell 200g packets at a price that ensures a 30% profit margin, but due to machine errors, they only achieve a 25% profit. The equations derived show that the selling price, based on the intended profit, is $p = 1.3(200c)$, while the actual profit reflects $p = 1.25[(200+x)c]$. By dividing these equations, the relationship between the intended and actual profits can be analyzed. The solution for the additional tea per packet, denoted as x, can be determined through algebraic manipulation. This situation highlights the impact of operational errors on profit margins in product packaging.
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A tea company intends to pack tea into 200g packets and sell them at such a price to make a 30% profit. The machines are set incorrectly and put in too much tea. Only 25% profit is made. How much extra tea is put in each packet?
 
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let p = selling price of a single packet
let c = cost for one gram of tea paid by the company

30% profit on a packet implies $p = 1.3(200c)$

let $x$ be the additional tea per packet in grams

25% profit on a packet implies $p = 1.25[(200+x)c]$

dividing the first equation by the second ...

$1 = \dfrac{1.3(200)}{1.25(200+x)}$

solve for $x$
 
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