Problema Solution

The price per​ unit, p, and the​ demand, x, for a particular material are related by the linear equation

p equals 80 minus four fifths xp=80−45x​,

while the supply is given by the linear equation

p equals four fifths xp=45x​,

as shown in the given figure.

At what value of p does supply equal​ demand?

Answer provided by our tutors

The problem statement is ambiguous.  This would appear to request a solution for the equations "p=(4/5)x" and "p=80-(4/5)x".  The statement also references a 'given figure' but all inquiries must be entirely text. 

The expected question is:

p=(4/5)x

p=80-(4/5)x

click here to solve a system of equations

p=40

x=50

So when p=40 supply equals demand.