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In a factory the cost of manufacturing x...

In a factory the cost of manufacturing x articles is Rs. (20+2x) and the selling price of x articles is Rs. (2.5x).On the same graph paper, with the same axes draw two graphs, first for the cost of manufacturing against no. of articles and the second for the selling price against no. of articles.
Take 2 cm=l10 articles on one axis and 2cm =Rs. 20 on the other axis. Provide for x upto 80. Use your graph to determine:
(i) No.of articles to be manufactured and sold to reach breakeven point (no profit and no loss situation).
(ii) The profit made when 60 articles are manufactured and sold.

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