Orange growers sell $15 billion of their crop to orange juice processors and $6 billion of their crop to supermarkets. The orange juice processors sell their orange juice to supermarkets for $18 billion. The supermarkets sell oranges to consumers for $8 billion, orange juice to consumers for $18 billion, and orange juice to restaurants for $4 billion. The restaurants sell the orange juice to consumers for $8 billion.
(a) Calculate the amounts oranges and orange juice contribute to GDP.
(b) Calculate the value added by orange growers, orange juice processors, supermarkets, and restaurants.