Problema Solution
A pen and a pencil together cost $5.10. The pen costs $5.00 more than the pencil. How much does each cost?
Answer provided by our tutors
let
x = the cost of the pen
y = the cost of the pencil
A pen and a pencil together cost $5.10
x + y = 5.10
The pen costs $5.00 more than the pencil
x = 5 + y
by solving the system of equations
x + y = 5.10
x = 5 + y
we find
x = $5.05
y = $0.05
click here to see the step by step solution of the system of equations
the pen costs $5.05.
the pencil costs $0.05 or 5 cents.