Question

On a buying trip in Los Angeles Rosario 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 $1080 to pay for the order. How many bracelets and how many necklaces did Rosaria purchase?

Answer 1

Two equation system

80 bracelets

40 necklaces

Explanation:

x+y=120

8x+11y=1080

x=120-y

8(120-y) +11y=1080

x=120-y

960-8y+11y=1080

x=120-y

3y=120

x=120-y

y=40

x=120-40

y=40

x=80

y=40