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Q: 1 packet of biscuits costs ` 16 but a pack of 4 of the same packet of biscuits costs ` 56. What is the effective discount (in %) on the pack?
  • A. 8%
  • B. 10%
  • C. 7.5%
  • D. 12.5%
Correct Answer: Option D -
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Explanations:

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