মার্বেল ঝামেলা


Once Dipu was carrying some marbels in his pocket. Three fifth of them were blue and the rest were red. He went to play with them with his friends. He used all of his red marbles. After the game, Dipu saw that he won the exact same number of red marbles that he used in the first place. He put all the marbles in his pocket. What is the portion of the red marbles in his pocket now?

Source: MA

Algebra  


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