[nyinyiaung]

Y plc produces widgets.
Each widget should take 0.5 hours to make. The standard rate of pay is $ 10 per hour. Idle time is expected to be 5% of hours paid.
They actually produce 10,800 units. They pay $ 50,000 for 6,000 hours, of which 330 hours are idle.
What is the excess idle time variance?
Answer is 316 Adv
Please provide me calculation as soon as possible.

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