প্রশ্ন সংশোধন করুন
প্রশ্ন:
A mixture of 20 kg of sprit and water contains 10% water. How much water must she added to mixture to raise the percentage of water to 25%
A mixture of 20 kg of sprit and water contains 10% water. How much water must she added to mixture to raise the percentage of water to 25%