Question

MEDAL
A company sells boxes of bracelets (b) for $30 and boxes of necklaces (n) for $50. They make batches of bracelets that fill 5 boxes and batches of necklaces that fill 7 boxes. The company only has 48 boxes. Which system of equations helps the company plan to make $320?

b = 48 - n
5b + 7n = 48

b = 48 - n
30b + 50n = 320

5b = 48 - 7n
30b + 50n = 320

5b = 48 - 7n
30b - 50n = 320

Answer 1

b = 48 - n
5b + 7n = 48

b = 48 - n
30b + 50n = 320

5b = 48 - 7n
30b + 50n = 320** this one! <====== ;D

5b = 48 - 7n
30b - 50n = 320