A. 400/d
B. 25/d
C. d/100
D. d/25
🧠 Explanation:
Amy spends d dollars weekly on groceries, with one-fourth on fruit, so fruit costs d/4 dollars per week. To spend $100 on fruit, the number of weeks is 100 ÷ (d/4) = 400/d. This algebraic problem tests proportional reasoning, used in budgeting or financial planning. The solution, 400/d, shows how variables model real-world scenarios like expenditure tracking. Understanding such calculations is key in economics, personal finance, and mathematics, ensuring accurate planning for expenses or resource allocation in practical contexts.