Four-fifths of Jesse Black's inventory was destroyed by fire. He sold the remaining part, which was slightly damaged, for one-seventh of its value and received $4000.
(a) What was the value of the destroyed part of the inventory?
(b) What was the value of the inventory before the fire?
(a) The value is $
(Round to the nearest cent as needed.)
(b) The value is $
(Round to the nearest cent as needed.)