First, find the unit price of the jelly. The unit cost of jelly is $0.08 per ounce. Next, find the total price of 2,400 oz by multiplying the unit price by the quantity. The total price is $192.
The amount of light passing through each foot the water in the lake = 100% - 60% = 40% The percent of light passing through 5 feet of water = 0.4^5 = 0.01024 = 1.02%
