Respuesta :
Answer:
5 lbs
Step-by-step explanation:
1) Â x = lbs. of coffee at $7 per lb
2) Â (7)(x) + (4)(10) = (5)(x + 10)
3) 7x + 40 = 5x + 50
  7x - 5x = 50 - 40
     2x = 10
      x = 5 (lbs. of coffee at $7 per lb.)
Answer:
5 lbs
Step-by-step explanation:
1) Â x = lbs. of coffee at $7 per lb
2) Â (7)(x) + (4)(10) = (5)(x + 10)
3) 7x + 40 = 5x + 50
  7x - 5x = 50 - 40
     2x = 10
      x = 5 (lbs. of coffee at $7 per lb.)