Bank Math Master১টি পরীক্ষায় এসেছেপ্রশ্ন ১১A certain principal amount, invested at simple interest, grows to Tk. 950 after 3 years and Tk. 1010 after 4 years. What is the original principal amount?কTk. 800খTk. 720গTk. 650ঘTk. 770উত্তর দেখুন