Difficulty: Medium
Correct Answer: ₹ 375
Explanation:
Introduction / Context:
We are given two linked scenarios: the actual sale (15% gain on the true cost) and a hypothetical case where both the cost and selling price change, producing a different profit percentage. Expressing all prices in terms of the original cost allows us to form one linear equation and solve for the original cost price (CP).
Given Data / Assumptions:
Concept / Approach:
Equate the two expressions for SP′ to eliminate SP′ and obtain a single equation in x. This is a common “what if” profit-and-loss transformation technique.
Step-by-Step Solution:
1.15x − 60 = 0.99x0.16x = 60 ⇒ x = 60 / 0.16 = ₹375
Verification / Alternative check:
Original sale: SP = 1.15 * 375 = ₹431.25. Alternate: CP′ = 0.75 * 375 = ₹281.25 and SP′ = 431.25 − 60 = ₹371.25; profit% = (371.25 − 281.25)/281.25 * 100 = 32% — consistent.
Why Other Options Are Wrong:
₹300/₹350/₹400 do not satisfy the exact 32% condition after the stipulated changes.
Common Pitfalls:
Applying the 25% reduction to the selling price instead of cost; mixing up which price is reduced by ₹60; rounding too early.
Final Answer:
₹ 375
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