A factory employs 3 categories of workers, A, B and C. The efficiency of the 3 categories of workers to do a specific task is in the ratio of 3 : 5 : 6 respectively and the factory employs 15 of category A, 12 of category B and 3 of category C. If the total wages paid to the entire group of 30 workers is $492 per hour, what will be the wages earned by a category C worker for an 8-hour day