প্রশ্ন ও উত্তর
A and B together can paint a wall in 3 days. A can do it alone in 5 days. How many days would it take B to do this job alone?
গণিত Time and Work 07 Oct, 2020
প্রশ্ন A and B together can paint a wall in 3 days. A can do it alone in 5 days. How many days would it take B to do this job alone?
সঠিক উত্তর
7.5
মন্তব্য
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