Respuesta :
Answer:
The answer is the secret beans cost $22.5 per pound.
Step-by Step: Step 1: make an equation. 12 lbs is the secret formula, and the cost in unknown lets put that as x. So 12 lbs +15 lbs of $18 mix which is the coffee beans =$20 per lbs. So the total amount is is 27 lbs. Now lets right the equation. 12x+15(18)=20(27) solve for x normally 12x+270=540 12x=270 x=22.5 SO the final answer is $22.5 I hope this helped.