Question
PSLE
Michael had shortbreads and Warren had puffs. Both gave half of what they had to each other. Michael sold 13 shortbreads and Warren sold 21 puffs. In the end, the ratios of shortbreads to puffs for Michael and Warren were 1 : 5 and 1 : 3 respectively. How many shortbreads did Michael have at first?
4 m

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PSLE
Michael had shortbreads and Warren had puffs. Both gave half of what they had to each other. Michael sold 13 shortbreads and Warren sold 21 puffs. In the end, the ratios of shortbreads to puffs for Michael and Warren were 1 : 5 and 1 : 3 respectively. How many shortbreads did Michael have at first?