Question
PSLE
Mark had croissants and Fred had tarts. Both gave half of what they had to each other. Mark sold 12 croissants and Fred sold 38 tarts. In the end, the ratios of croissants to tarts for Mark and Fred were 1 : 7 and 1 : 5 respectively. How many croissants did Mark have at first?
4 m

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PSLE
Mark had croissants and Fred had tarts. Both gave half of what they had to each other. Mark sold 12 croissants and Fred sold 38 tarts. In the end, the ratios of croissants to tarts for Mark and Fred were 1 : 7 and 1 : 5 respectively. How many croissants did Mark have at first?