A re-roller produced 400 meter tons of M.S> bars spending Rs.36,00,000 towards material and Rs.6,20,000 towards rolling charges. Ten percent of the output was found to be defective, which had to be sold at 10% less than the price for good production. If the sales realization should give the firm an overall profit of 12.5% on cost. Find the selling price per metric ton of both the categories of bars. The scrap arising during the rolling process fetched a realization of Rs.60,000.