Bank Math Master৩টি পরীক্ষায় এসেছেপ্রশ্ন ৭If A can do 1/4 of a work in 3 days and B can do 1/9 of the same work in 4 days, how much will A get if both work together and paid Tk 800 in all?ক650 Tkখ600 Tkগ550 Tkঘ500 Tkউত্তর দেখুন