SSC CGL – Combined Graduate Level Examination · ప్రశ్న 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%?
సమాధానం చూపించు & వివరణ
సమాధానం: (D) 30 litres
వివరణ
Water is 8 L, so the total must be 80 L: add 30 L of oil.