An Assembly Line with 28 Activities Is to Be Balanced

Multiple Choice

An assembly line with 28 activities is to be balanced. The total amount of time required for all 28 activities is 39 minutes. The longest activity is 2.2 minutes and the shortest is 0.8 minutes. The line will operate for 450 minutes per day. What is the assembly-line efficiency with 11 stations and a product produced every 5 minutes?

A) Less than 65%
B) More than 65% but less than 75%
C) More than 75% but less than 85%
D) More than 85% but less than 95%