Question

A shopkeeper purchased 15 kg of variety A rice at X Rs per kg and 10 kg of variety B rice at ‘X+ 5’ Rs per kg. The shopkeeper sold the whole quantity of variety A rice at 10% profit and that of variety B rice at 20% profit. The total selling price of variety A rice was Rs 30 more than that of variety B rice. Had the two varieties been mixed and sold at an overall profit of 20%, what would have been the selling price of the mixture per kg?​

Answer 1

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A numeric (or numerical) scale, also known as a Numerical Rating Scale (NRS), is basically any scale which renders a quantitative symbolization of an attribute. ... The numerical presentation is used to provide the data with interval properties beyond just ordinal properties.