Profit and Loss – Comparing +10% gain vs -10% loss difference: An article yields Rs 6 more when sold at a gain of 10% than when sold at a loss of 10%. What is the cost price of the article?
Aptitude
Profit and Loss
Difficulty: Easy
Choose an option
-
ARs 20
-
BRs 24
-
CRs 25
-
DRs 30
-
ERs 36
Answer
Correct Answer: Rs 30
Explanation
Introduction / Context:The two selling prices differ because of equal percentage gain and loss applied to the same cost price. Their difference directly gives a fraction of the CP.
Given Data / Assumptions:
- Gain scenario = +10%
- Loss scenario = -10%
- Difference in SPs = Rs 6
Concept / Approach:If CP = x, then SP at gain = 1.10x and SP at loss = 0.90x. Difference = 1.10x - 0.90x = 0.20x.
Step-by-Step Solution:0.20x = 6x = 6 / 0.20 = 30
Verification / Alternative check:SP at +10% = 33; SP at -10% = 27; difference = 6, consistent.
Why Other Options Are Wrong:20, 24, 25, and 36 do not satisfy 0.20x = 6.
Common Pitfalls:Using 10% of 6 or misinterpreting the difference as 20% of SP.
Final Answer:Rs 30