Question
PSLE
George kept his black and purple buttons in two boxes. The ratio of the number of black to purple buttons in the first box was 1 : 11 and it was 1 : 3 in the second box. The two boxes contained the same number of buttons. What fraction of George's buttons were black buttons?
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PSLE
George kept his black and purple buttons in two boxes. The ratio of the number of black to purple buttons in the first box was 1 : 11 and it was 1 : 3 in the second box. The two boxes contained the same number of buttons. What fraction of George's buttons were black buttons?