12. As a result of leakage repairs in the previous problem, determine our new annual cost of leakage and the annual cost savings due to leakage repairs. Using the definition of leakage and the fact that the demand flow of 1500 scfm remains unchanged, what is our new leakage percent and how does it compare to the typical range of 10 to 30 %? Comment and discuss. (ans: 18 % and $83,169 savings)