A trader sells 25 kg of rice at ₹1,400. A customer asks for 15% discount. The shopkeeper agrees to it but instead of 1 kg he gives 10% less rice. What is the effective discount that the customer gets (correct to one decimal place)?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 5.6% .
Original price per kg = ₹1400 / 25 = ₹56
15% discount price per kg = 56 × 0.85 = ₹47.6
But shopkeeper gives 10% less rice, so for 1 kg price, customer gets only 0.9 kg.
So, Effective price per kg = ₹47.6 / 0.9 ≈ ₹52.89
Now, compare with original price ₹56:
Effective discount = (56 - 52.89) / 56 × 100 ≈ 5.6%