Problema Solution
Maria and Nora are selling wrapping paper for a school fundraiser.
Customers can buy rolls of plain wrapping paper and rolls of shiny wrapping paper.
Maria sold 4 rolls pf plain wrapping paper and 6 rolls shiny wrapping paper for a total of
138 dollars. Nora sold 11 rolls of plain wrapping paper and 2 rolls of shiny wrapping paper
for a total of 162. What is the cos(t)of one roll of plain wrapping paper and one roll of
shiny wrapping paper?
Answer provided by our tutors
let
p = the cost of one roll of plain wrapping paper
s = the cost of one roll of shiny wrapping paper
Maria sold 4 rolls of plain wrapping paper and 6 rolls shiny wrapping paper for a total of $138
4p + 6s = 138
Nora sold 11 rolls of plain wrapping paper and 2 rolls of shiny wrapping paper for a total $162
11p + 2s = 162
by solving the system of equations
4p + 6s = 138
11p + 2s = 162
we find
p = $12
s = $15
click here to see the step by step solution of the system of equations
the cost of one roll of plain wrapping paper is $12.
the cost of one roll of shiny wrapping paper is $15.