Babu gave 20% of his marbles to Sadeq, and 20% of the rest of marbles to Tipu. If he now has 320 marbles, how many did he have originally?
A. 420
B. 500
C. 640
D. 720
E. None of these
সঠিক উত্তরঃ
B.
500
Explanation:
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