A 15% drop in the price of sugar allows a customer to purchase 2 kg more for ₹272. What is the new price of sugar per kg?
Show answer & explanation
Correct answer: B
Explanation
Original price of sugar = ₹x per kg
New price = 85% × x = 0.85x
Original quantity = 272/x
New quantity = 272/(0.85x)
272/(0.85x) − 272/x = 2
272 × (1/0.85 − 1) = 2x
272 × (15/85) = 2x
48 = 2x
x = 24
New price = 0.85 × 24 = ₹20.40