Lien, the Proprietor of a Grocery Store, Prepares Her Deluxe

Essay

Lien, the proprietor of a grocery store, prepares her Deluxe Nut Combo by mixing various ingredients she buys in bulk. Her recipe calls for 5 kg of peanuts, 2 kg of cashews, 1 kg of almonds, 500 g of sunflower seeds, 400 g of raisins, and 300 g of Smarties. In order to set the retail price at 150% of her cost, Lien must determine her cost based on the average wholesale price of the ingredients. These prices are $2.95/kg for peanuts, $9.50/kg for cashews, $11.50/kg for almonds, $2.75/kg for sunflower seeds, $3.60/kg for raisins, and $6.40/kg for Smarties.
a) What is Lien's average cost per 100 g of her Deluxe Nut Combo?
b) What is her retail price per 100 g?