A Rhode Island company produces communion wafers for churches around the country and the world. The little company produces a lot of wafers, several hundred million per year. When in production, the process produces wafers at the rate of 48 per second. During this production process the wafers must spend 5 minutes in an oven and then 10 minutes passing through a cooling tunnel.

Required:
How many wafers does the cooling tube hold on average when in production?