Question
Some puffs are displayed an equal distance from one another on a table. The distance between the third and the twelfth puffs is 45 cm. The distance between the ninth and the last puff is 45 cm. How many puffs are there altogether?
4 m

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Some puffs are displayed an equal distance from one another on a table. The distance between the third and the twelfth puffs is 45 cm. The distance between the ninth and the last puff is 45 cm. How many puffs are there altogether?