Answer to Problem # 18:Pcents= 3 x Ccentslb. lb. In 1 lb. of nuts: (1/3 lb. x Pcents) + ( 2/3 lb. x Ccents) = 40 cents lb. lb. (1/3 x P cents) + ( 2/3 x C cents ) = 40 centsSubstituting '3C' for 'P'(1/3 x 3 C cents) + (2/3 x C cents) = 40 cents 1 C + 2/3 C = 1 2/3 C = 40 or 5/3 C = 40 C = 40 x 3/5 = 120 / 5 = 24 P = 3 x C = 72 Cashews = 24 cents / lb. (ANSWER) Pecans = 72 cents / lb. (ANSWER)return