1. A process is accomplished in 4 sequential steps- S1, S2, S3 and S4. The lead times (in minutes) and the number of resources for every step are indicated in the table below.

Sub - Process	Time (min)	No of resources
S1	12	1
S2	8	1
S3	16	1
S4	10	1

a.) What is the total lead time (in minutes)?

b.) Assuming infinite demand, what is the process flow rate? (keep time dimension as minutes, answer in decimals)

c.) Assuming infinite customer demand, what is the utilization of process S1? (answer in decimals)

d.) Assuming infinite demand, what is the utilization of process S2? (answer in decimals)

e.) If customers arrive at a constant rate of 3 customers per hour, what is the utilization of S3? (answer in decimals)