Question 1175572
Look to see that the mixture price is exactly halfway between the two given coffees.  Twenty-five kilograms of each.   Do you need to see some algebra for this?


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Batamgas,  200 pesos per kg
Sri Lanka, 150 pesos per kg, using 25 kg
The Mixture, 175 pesos per kg


w, the mass of the Batamgas to use


{{{MONEY/MASS}}}{{{Accounting}}}


{{{(200w+150*25)/(w+25)=175}}}

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Exact steps may vary.

{{{200w+150*25=175(w+25)}}}

{{{200w+150*25=175w+175*25}}}

{{{200w-175w=175*25-150*25}}}

{{{25w=(175-150)*25}}}

{{{w=175-150}}}

{{{highlight(w=25)}}}