In the 1997, rice was selling at Rs. 6 per kg, cloth at Rs. 20 per metre, housing at Rs. 500 per quarter, other items at Rs. 20 per unit. In 1998, the price of rice rose by Rs. 2 per kg., housing by Rs. 300 per quarters and other items doubled in price. If the consumer price index number for 1998 (with 1997 as base) is 180, by how much the cloth rose in price during the year.

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