Question

On a buying trip in Los Angeles, Rosaria Perez ordered 120 pieces of jewelry: a number of bracelets at $4 each and a number of necklaces at $13 each. She wrote a check for $1110 to pay for the order. How many bracelets and how many necklaces did Rosaria purchase? On a buying trip in Los Angeles, Rosaria Perez ordered 120 pieces of jewelry: a number of bracelets at $4 each and a number of necklaces at $13 each. She wrote a check for $1110 to pay for the order. How many bracelets and how many necklaces did Rosaria purchase? @Mathematics

Answer 1

4x + 13 (120-x) = 1110
Braclets = 50
Necklaces = 70

Answer 2

Let number of Bracelets = x
then number of necklaces = (120 - x)

cost of x bracelets = x*4 = 4x
cost of (120-x) necklaces = (120-x)*13 = (1560 - 13x)
ATQ,
4x + (1560 - 13x) = 1110
4x - 13x = 1110 - 1560
-9x = - 450
x = -450/-9
x = 50

so number of bracelets = x = 50
number of necklaces = 120 - 50 = 70