SOLUTION: A popular brand of Brazilian coffee costs $20 per pound, and a particular brand of colombian coffee costs $16 per pound. If you mix 15 pounds of Brazilian coffee with 5 pounds of

Algebra ->  Signed-numbers -> SOLUTION: A popular brand of Brazilian coffee costs $20 per pound, and a particular brand of colombian coffee costs $16 per pound. If you mix 15 pounds of Brazilian coffee with 5 pounds of       Log On


   



Question 663609: A popular brand of Brazilian coffee costs $20 per pound, and a particular brand of colombian coffee costs $16 per pound. If you mix 15 pounds of Brazilian coffee with 5 pounds of Colombian coffee, how many dollars does one pound of the mixture cost?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Let $x be the price of the mixture
Price ---------------- quantity
Brazilian coffee 20 ----------------15 pounds
Coumbian coffee 16 ----------------5 pounds
Total x ----------------20 pounds

15*20+5*16=20x
300 + 80 = 20 x
380 = 20 x
/ 20
380 / 20 = x
19 = x
the price of the mixture is $ 19