Wills Welded Widgets (WWW) makes its Q Model from components R, S, and T. Component R is made from 2 units of component X and 1 unit of component Y. Component T is made from 1 unit of component V and 3 units of component Z.

Using the given information and the beginning inventories 70 units of component T and 170 units of component R, calculate the minimum replenishment time for the 70 Q Models.

Item	Usage per Parent	Lead Time (weeks)
Q	1	6
R	3	5
S	2	4
T	1	3
X	2	3
Y	1	4
V	1	4
Z	3	5
The cumulative lead time is __________________weeks