Clearwater Hospital has never used standard costs. By searching industry literature, however, you have determined the following nationwide averages for hospital labs:

Plates:	Three plates are required per lab test. These plates cost $3.50 each and are disposed of after the test is completed.
Labour:	Each smear should require 0.3 hours to complete, and each blood test should require 0.6 hours to complete. The average cost of this lab time is $15 per hour.
Overhead:	Overhead cost is based on direct labour-hours. The average rate of variable overhead is $6 per hour. The average rate of fixed overhead is $12 per hour. These rates are based on a denominator activity level of 1,000 hours per month.

Required:

1. Compute the materials price variance for the plates purchased last month, and compute a materials quantity variance for the plates used last month. (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance).)