Bank Math Master১টি পরীক্ষায় এসেছেপ্রশ্ন ১৫How much water should be added to 80 liters of pure milk to gain extra 20% profit when selling the mixture at the price of pure milk?ক6 litersখ12 litersগ8 litersঘ16 litersউত্তর দেখুন