Simon keeps some black and white marbles in Box A. He also keeps some green and blue marbles in Box B. There were 1 3/5 times as many black as white marbles. The ratio of the number of white marbles to the total number of green and blue marbles is 8: 5. When Simon buys 138 more green and blue marbles, the ratio of the number of black marbles to the total number of green and blue marbles becomes 4:3. a) Find the ratio of the number of black marbles to the number of blue and green marbles in the boxes at first? b) How many more black marbles than white marbles are there in Box A?

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