Question
PSLE
Ahmad kept pencils in boxes Y and Z. Box Y contained four times as many pencils as box Z. In box Y, 15 of the pencils were yellow pencils. In box Z, 12 of the pencils were yellow pencils. What fraction of Ahmad's pencils were yellow pencils?
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PSLE
Ahmad kept pencils in boxes Y and Z. Box Y contained four times as many pencils as box Z. In box Y, 15 of the pencils were yellow pencils. In box Z, 12 of the pencils were yellow pencils. What fraction of Ahmad's pencils were yellow pencils?