Answer:
The price of a notebook is $0.8 and the price of a pencil is $0.2
Step-by-step explanation:
Let
n ---> the price of a notebook
p ---> the price of a pencil
we have
[tex]7n+4p=6.40[/tex] ----> equation A
[tex]2n+19p=5.40[/tex] ----> equation B
Solve the system of equations by graphing
The solution is the intersection point both graphs
using a graphing tool
The solution is the point (0.8,0.2)
see the attached figure
therefore
The price of a notebook is $0.8 and the price of a pencil is $0.2
