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# Medical Instruments: Compute the materials variances

Medical Instruments produces a variety of electronic medical devices. Medical Instruments uses a standard cost system and computes price variances at the time of purchase. One product, a thermometer, measures patient temperature orallt. It requires a silver lead with a standard length of 5 inches per thermometer. To make the leads, hollow silver tubing is purchased at a standard price of \$4 per inch, cut into the required length, and then assembled into the thermometer.

There is no silver tubing in inventory when a batch of 200 thermometers was scheduled for production. Twelve hundred inches of silver tubing were purchased for \$4,680 by the purchasing department for this 200-unit batch of thermometers, and 1,100 inches were used in production.

Compute the materials variances for silver tubing and comment on their meaning.

#### Solution Summary

See variances computed in Excel (attached). Click in cells to see computations. Your tutorial created a chart showing you how to isolate the price variance at purchase and then the usage variance at production.

\$2.19