Answer:
The COQ is -$10,000
Explanation:
The COQ can be represented by the sum of two factors: Cost of Good Quality and Cost of Poor Quality.
The Cost of Good Quality (CoGQ) includes the prevention and appraisal cost and the Cost of Poor Quality (CoPQ) includes internal and external failures.
The formula of COQ is:
COQ = CoGQ + CoPQ
If
CoGQ= $10,000 + $ 50,000 = $ 60,000
and
CoPQ= -$30,000 - $ 40,000 = -$ 70,000
CoPQ values are negative because they are reductions of wate and returns of bad products
then:
COQ= $ 60,000 - $ 70,000
COQ= -$ 10,000