If the standard material cost for a normal mix of one metric tonne of chemical X is as follows:

Chemical A 240 kg @ $6 per kg,

Chemical B 400 kg @ $12 per kg,

Chemical C 640 kg @ $10 per kg,

During a month 6.25 metric tonnes of X chemical were produced from:

1.6 metric tonnes of chemical A at a cost of $11200,

2.4 metric tonnes of chemical B at a cost of $30000,

4.5 metric tonnes of chemical C at a cost of $47250.

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