Question
Some cookies are displayed an equal distance from one another on a table. The distance between the first and the eleventh cookies is 30 cm. The distance between the eighth and the last cookie is 45 cm. How many cookies are there altogether?
4 m

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Some cookies are displayed an equal distance from one another on a table. The distance between the first and the eleventh cookies is 30 cm. The distance between the eighth and the last cookie is 45 cm. How many cookies are there altogether?