Bosleys Pet Foods buys dog kibble for $19.50 per bag, less 40%. The stores overhead is 33

Question:

Bosley’s Pet Foods buys dog kibble for $19.50 per bag, less 40%. The store’s overhead is 33 1/3 % of the selling price, and the desired profit is 10% of the selling price.
a. At what price per bag should the dog food be sold?
b. At this price, what is the rate of markup on cost?
c. What is the break-even price?