Answer:
Controllable cost variance = $51,600. favourable
Step-by-step explanation:
The controllable cot variance is the difference between the the standard controllable cost for the actual output and the actual controllable cost
$
Standard controllable cost for the output achieved
( $3.80 × 40,000) = 152,000
Actual controllable cost (169,400-69,000) = 100,400
Controllable cost variance 51,600. Favorable
Note that the fixed cost of $69,000 is not a controllable cost, hence it is deducted from the total overhead cost