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Q: A vegetable seller bought 10 dozens of potatoes for ` 120, another 5 dozens for ` 50 and another 5 dozens for ` 30. He sold the potatoes for ` 9 a dozen. How much discount did he overall offer?
  • A. 11.11%
  • B. 5%
  • C. 7.5%
  • D. 10%
Correct Answer: Option D -
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Explanations:

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