A task involves positioning two metal parts with a rubber gasket sandwiched between them, inserting two bolts into pre-drilled holes, threading a nut onto each bolt, and tightening each bolt with a pneumatic wrench. In a preliminary study, the manager observed one of his workers perform this task five times. The observations were made in an air-conditioned, well-lighted training facility, at ground level, with all tools and equipment clean and readily available.

Observation:	1	2	3	4	5	Average time	Normal time	Standard time
Task time (seconds):	50	54	60	145	56	X	Y	Z

What is the standard time " Z " for this task, if the employee worked at a 10% slower rate than typical for adequately trained workers and her allowance is 14%? (Hint: compute X, Y and Z, in that order).

	A.	76.4
	B.	65.3
	C.	99.6
	D.	99.2
	E.	110.9