Question
PSLE
Gabriel has some puffs. If he gives each of his friends 7 puffs instead, he will have 20 left. If he gives each of them 9 puffs, there is no puff left. How many puffs does Gabriel have?
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PSLE
Gabriel has some puffs. If he gives each of his friends 7 puffs instead, he will have 20 left. If he gives each of them 9 puffs, there is no puff left. How many puffs does Gabriel have?