BQ 3 The standard cost of a chemical mixture is as follows: 40% material A 60% material B at 20 per kg. at *30 per kg. A standard loss of 10% of input is expected in production. The cost records for a period showed the following usage: 90 kg material A 110 kg material B at a cost of 18 per kg. at a cost of 34 per kg. The quantity produced was 182 kg. of good product. Calculate Material Price Variance, Material Usage Variance and Material Cost Variance.