Question
PSLE
Jenson kept his black and white marbles in two boxes. The ratio of the number of black to white marbles in the first box was 1 : 2 and it was 1 : 5 in the second box. The two boxes contained the same number of marbles. What fraction of Jenson's marbles were black marbles?
2 m

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PSLE
Jenson kept his black and white marbles in two boxes. The ratio of the number of black to white marbles in the first box was 1 : 2 and it was 1 : 5 in the second box. The two boxes contained the same number of marbles. What fraction of Jenson's marbles were black marbles?