A box contains only marbles. If 1/4 of the marbles were removed, the box would be filled to 1/3 of its capacity. It instead 100 marbles were added the box would be full. How many marbles are there in the box?

প্রশ্নঃ A box contains only marbles. If 1/4 of the marbles were removed, the box would be filled to 1/3 of its capacity. It instead 100 marbles were added the box would be full. How many marbles are there in the box?