2018 · Q41
A milk vendor bought 28 litres of milk at the rate of ₹ 8.50 per litre. After adding some water he sold the mixture at the same price. If his gain is 12.5%, how much water did he add?
Elementary MathematicsProfit and Loss
- A4.5 litres
- B4 litres
- C3.5 litres
- D3 litres
Explanation
Cost price = 28 x 8.5 = Rs 238. Selling the mixture at Rs 8.5/L with 12.5% gain gives 238 x 1.125/8.5 = 31.5 litres of mixture. Water added = 31.5 - 28 = 3.5 litres. Hence option C.