{
  "$schema": "./question-pack-v2.schema.json",
  "format": "math-drill-question-pack",
  "schemaVersion": 2,
  "kind": "fixed_numeric",
  "id": "example-retail-practice",
  "packVersion": "1.0",
  "title": "Example Retail Practice",
  "description": "Two original fixed numeric questions demonstrating tolerance and error checks.",
  "publisher": "Example Learning Lab",
  "license": "CC BY 4.0",
  "questions": [
    {
      "id": "retail-revenue-001",
      "type": "numeric",
      "category": "business_math",
      "tags": ["revenue", "multiplication"],
      "difficulty": "beginner",
      "prompt": "A fictional retailer sells 24,000 annual subscriptions at $20 each. What is annual revenue?",
      "answer": {
        "value": 480000,
        "unit": "currency",
        "roundingRule": "exact"
      },
      "explanation": {
        "short": "Revenue equals subscriptions multiplied by price.",
        "steps": [
          "Revenue = volume x price.",
          "24,000 x $20 = $480,000.",
          "Annual revenue is $480,000."
        ],
        "shortcut": "Multiply 24 x 2, then append four zeros."
      },
      "expectedTimeSeconds": 30
    },
    {
      "id": "share-growth-001",
      "type": "numeric",
      "category": "percentages",
      "tags": ["percentage_change", "percentage_points"],
      "difficulty": "intermediate",
      "prompt": "A fictional product's market share rises from 20% to 25%. What is the relative percentage increase?",
      "answer": {
        "value": 0.25,
        "unit": "percentage",
        "tolerance": {
          "type": "absolute",
          "value": 0.001
        },
        "errorChecks": {
          "percentagePointValue": 0.05
        },
        "roundingRule": "nearest_0_1"
      },
      "explanation": {
        "short": "Divide the five-percentage-point increase by the original 20% share.",
        "steps": [
          "The share increased by 25% - 20% = 5 percentage points.",
          "Relative increase = 5 / 20 = 0.25.",
          "The relative percentage increase is 25%."
        ],
        "shortcut": "A five-point gain on a base of 20 is one quarter, or 25%."
      },
      "expectedTimeSeconds": 45
    }
  ]
}