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qid 90 · business

Question: (a) Given the two discount series of 30-10-2(1/2) % and 25-15-2%, which is better? (b) Given the discount series 15-15% and the single rate of 30%, which is better?

  1. The series 30-10-2(1/2)% and the single rate of 25% are better
  2. The single rate of 25% and the series 15-15% are better
  3. The series 30-10-2(1/2) % and the series 15-15% are better
  4. The series 25-15-2% and the single rate of 30% are better
  5. The series 30-10-2(1/2)% is better, but there is no difference between the series 15-15% and the single rate of 30%
  6. Both discount series are equally beneficial
  7. The series 25-15-2% is better, and the series 15-15% and the single rate of 30% are equally beneficial
  8. The series 25-15-2% and the series 15-15% are better
  9. The series 25-15-2% and the single rate of 25% are better
  10. The series 30-10-2(1/2) % and the single rate of 30% are better

Our answer: J. The series 30-10-2(1/2) % and the single rate of 30% are better Source quote machine-checked (exact quote)

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How it was answered

Stored method, replayed by code (kind: formula)

card: formula · card sha256 5287e2c5408c949d…

Current source

Business Math (Olivier), Mathematics LibreTexts, 6.01 Figuring Out the Cost - Discounts

https://math.libretexts.org/Bookshelves/Applied_Mathematics/Business_Math_(Olivier)/06:_Marketing_Applications_(What_Is_It_Going_to_Cost_Me)/6.01:_Figuring_Out_the_Cost_-_Discounts__(How_Much)

“This requires you first to convert the multiple discount rates into an equivalent single discount rate using Formula 6.4 and then to apply Formula 6.2a.”

Source quote machine-checked (exact quote)

retrieved 2026-09-18T00:09:53.044Z

page text sha256 472a2523610b31d8… · content sha256 e7c4d5f6615a057b…

addendum formula_qid90.formula_ADDENDUM_source_rs20260918T000953Z · sha256 da63d0f1330aa71f… · replaces the version below, addendum sha256 b9b2ce7528d61cda…

Earlier version (superseded)

No public source has been found for this card yet (6 places checked internally).

addendum formula_qid90.formula_ADDENDUM_source · sha256 b9b2ce7528d61cda…

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