SSC CGL – Combined Graduate Level Examination · प्रश्न 68
A 50-litre mixture of oil and water has 16% water. How many litres of oil must be added to make water content 10%?
उत्तर देखें और व्याख्या
उत्तर: (D) 30 litres
व्याख्या
Water is 8 L, so the total must be 80 L: add 30 L of oil.