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qid 394 · business

Question: How much money must be on deposit for 3 months at an annual interest rate of 3% in order to earn $11.25 in interest. Verify your answer, using the formula Interest = Principal × rate per year × time (in years) orI =Prt.

  1. $1000
  2. $1200
  3. $900
  4. $1500
  5. $1350
  6. $1600
  7. $1800
  8. $2000
  9. $750
  10. $1125

Our answer: D. $1500 Source quote machine-checked (exact quote)

A machine check confirms the quoted words appear at the source. A person has not yet reviewed these. EARN MARKS as a Human Reviewer

How it was answered

Stored formula / worked method, replayed by code

Simple interest principal determination and verification problem

card: formula · card sha256 35bc61042eea23b6…

Current source

OpenStax Contemporary Mathematics, 6.3 Simple Interest

https://openstax.org/books/contemporary-mathematics/pages/6-3-simple-interest

“When the annual interest rate, the principal, and the number of years that the money is borrowed is known, the interest to be paid can be found and from there the total to be repaid can be calculated.”

Source quote machine-checked (exact quote)

retrieved 2026-09-18T00:10:03.713Z

page text sha256 d5b029a8dc22bbf8… · content sha256 3c60b5928df3287d…

addendum formula_qid394.formula_ADDENDUM_source_rs20260918T001003Z · sha256 bc432367fbf97cfc… · replaces the version below, addendum sha256 a7b1e6810205221e…

Earlier version (superseded)

https://en.wikipedia.org/wiki/Interest#Simple_interest

Source weak (http_get_200_text_and_question_terms)

retrieved 2026-09-17T00:31:41.895Z

page text sha256 6e22a88325f7ba69… · content sha256 —

addendum formula_qid394.formula_ADDENDUM_source_relabel_unverified20260917T012453Z · sha256 a7b1e6810205221e… · replaces the version below, addendum sha256 3d0c72833fee0cb1…

Earlier version (superseded)

https://en.wikipedia.org/wiki/Interest#Simple_interest

Source weak (http_get_200_text_and_question_terms)

retrieved 2026-09-17T00:31:41.895Z

page text sha256 6e22a88325f7ba69… · content sha256 —

addendum formula_qid394.formula_ADDENDUM_source_bf20260917T003141Z · sha256 3d0c72833fee0cb1… · replaces the version below, addendum sha256 38d33a189267885d…

Earlier version (superseded)

No public source has been found for this card yet (4 places checked internally).

addendum formula_qid394.formula_ADDENDUM_source · sha256 38d33a189267885d…

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