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Radhika bought a dozen pens at the rate of Rs 5.00 per pen. She sold 6 of them for Rs 7.5) each and the rest for Rs 6.75 each. What was the profit or loss?
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Radhika bought a dozen pens at the rate of Rs 5.00 per pen. She sold 6 of them for Rs 7.5)
each and...
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