Problema Solution
Tyrel and Dalia bought some pens and penciles. Tyrel bought 4 pens and 5 pencils, which cost him 6.71$ Dalia bought 5 pens and 3 pencils, which cost her 7.12$ what was the price of each pen? what was the price of each pencil
Answer provided by our tutors
let
x = the price of a pen
y = the price of a pencil
Tyrel bought 4 pens and 5 pencils, which cost him 6.71$
4x + 5y = 6.71
Dalia bought 5 pens and 3 pencils, which cost her 7.12$
5x + 3y = 7.12
by solving the system of equations
4x + 5y = 6.71
5x + 3y = 7.12
we find
x = $1.19
y = $0.39
click here to see the step by step solution of the system of equations
the price of one pen is $1.19.
the price of one pencil is $0.39.