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The price of a product is related to the number of units available (supply) by the equation `Px+3P-16x=234`, where P is the price of the product per unit in Rupees (Rs) and x is the number of units. Find the rate at which the price is changing with respect to time when 90 units are available an the supply is increasing at a rate of units/week .

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The correct Answer is:
`=-(10)/(31)~~-0.32`.
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FULL MARKS-APPLICATIONS OF DIFFERENTIAL CALCULUS -ADDITIONAL QUESTIONS SOLVED
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