Problema Solution
On a buying trip in Los Angeles, Rosaria Perez ordered 120 pieces of jewelry: a number of bracelets at $8 each and a number of necklaces at $11 each. She wrote a check for $1140 to pay for the order. How many bracelets and how many necklaces did Rosaria purchase?
Answer provided by our tutors
let
b = the number of bracelets
n = the number of necklaces
Rosaria Perez ordered 120 pieces of jewelry
b + n = 120
She wrote a check for $1140 to pay for the order
8b + 11n = 1140
by solving the system of equations
b + n = 120
8b + 11n = 1140
we find
b = 60 bracelets
n = 60 bracelets
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