Math Problem Statement
A product has a linear demand function and a linear supply function. It is known that when the price of a product = P (in $/ton), the quantity demanded will equals to Qd (in tons), and the quantity supplied will equals to Qs (in tons). The detailed information can be seen below.
P ($/ton) Qd (tons) Qs (tons)
10.00 2.02 3.07
5.00 2.36 1.98
Calculate the quantity demanded (tons) when the price is $8.9 /ton. (Notes: Use 4 digits after decimal point)
Solution
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Math Problem Analysis
Mathematical Concepts
Linear Equations
Algebra
Supply and Demand
Formulas
Demand function: Qd = m_d * P + b_d
Supply function: Qs = m_s * P + b_s
Slope formula: m = (y2 - y1) / (x2 - x1)
Theorems
Linear Equation Theorem
Suitable Grade Level
Grades 10-12
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