Question
Some tarts are displayed an equal distance from one another on a table. The distance between the fifth and the seventh tarts is 36 cm. The distance between the eleventh and the last tart is 54 cm. How many tarts are there altogether?
4 m

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Some tarts are displayed an equal distance from one another on a table. The distance between the fifth and the seventh tarts is 36 cm. The distance between the eleventh and the last tart is 54 cm. How many tarts are there altogether?