Answer
a) Sold = 150 and supplied =300
b) Sold = 250 and supplied =250
Work Step by Step
a) Since, we have $N= -5P+750$ and $N= 2.5P$
Thus, when $P=120$
Then $N= -5(120)+750=150$ and $N= 2.5(120)=300$
Therefore, Sold = 150 and supplied =300
b) Since, we have $N= -5P+750$ and $N= 2.5P$
Thus, when $-5P+750= 2.5P$
or, $P=\dfrac{750}{7.5}=100$
Now, when $P=100$ then $N= -5(100)+750=250$ and $N= 2.5(100)=250$
Therefore, Sold = 250 and supplied =250
Hence, a) Sold = 150 and supplied =300
b) Sold = 250 and supplied =250
