Jaderston Corporation uses the weighted-average method in its process costing system. Data concerning the first processing department for the most recent month are listed below:

Beginning work in process inventory:
Units in beginning work in process inventory	800
Materials costs	$4,900
Conversion costs	$5,300
Percent complete with respect to materials	60%
Percent complete with respect to conversion	35%
Units started into production during the month	12,900
Units transferred to the next department during the month	12,300
Materials costs added during the month	$250,300
Conversion costs added during the month	$285,400
Ending work in process inventory:
Units in ending work in process inventory	1,400
Percent complete with respect to materials	55%
Percent complete with respect to conversion	50%

Note: Your answers may differ from those offered below due to rounding error. In all cases, select the answer that is the closest to the answer you computed. To reduce rounding error, carry out all computations to at least two decimal places.

The cost per equivalent unit for materials for the month in the first processing department is closest to:

	$19.53
	$18.63
	$18.67
	$19.78