Problema Solution
Mr. Patterson bought 15 notebooks n and 10 pens p for $26.25. Mr. Thompson bought 8 of the same notebooks n and 5 of the same pens p for $13.77. Based on this information, what is the cost of one pen?
Answer provided by our tutors
Let
x = the cost of notebook
y = the cost of pen
15*x + 10*y = 26.25
8*x + 5*y = 13.77
Lets solve the system of equations
x = $1.29
y = $0.69
$0.69 is the cost of one pen.