Each X requires 2 of component Y; each Y requires 4 of part Z. The lead time for assembly of X is 1 week. The lead time for the manufacture of Y is 1 week. The lead time for the procurement of Z is 6 weeks. The cumulative lead time for X is __________ weeks.
A) 6
B) 7
C) 8
D) 10
E) cannot be determined

Question

Quizplus · Accepted Answer

To assemble X, we need 2Y and for each Y we need 4Z. Therefore, for each X we need 8Z. Considering the lead time specified in the question, it takes 6 weeks to procure Z, 1 week to manufacture Y and 1 week to assemble X. Thus, the cumulative lead time for X is 6+1+1 = 8 weeks. Therefore, the best choice is C.

Each X Requires 2 of Component Y; Each Y Requires