At a butcher shop, 1 pound of beef and 2 pounds of chicken costs 859 cents. 1 pound of beef and 2 pounds of duck costs 951 cents. What is the total cost of 1 pound of beef, 1 pound of chicken, and 1 pound of duck (in cents)?

Answer 1

b + 2c = 859¢
b + 2d = 951¢

b + c + d = ((b + 2c) + (b + 2d))/2