Question
What is the purest form of
coal?Solution
The purest form of coal is anthracite. Anthracite has the highest carbon content, the fewest impurities, and the highest energy density among all types of coal. It is characterized by its hard, glossy appearance and is used primarily for residential and commercial heating due to its high heat output and relatively clean-burning properties.
Amit sold an article for ₹369.60 after allowing 12% discount on the marked price. Had he not allowed any discount he would have earned a profit of 20%...
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A retailer provides 1 article free on the purchase of 4 articles. Calculate the discount percentage given by the retailer.
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