Question
The average height of a group of 7 boys is 130 cm. When Carl, Eric and Daniel left the group, the average height decreased by 2 cm. What is Carl, Eric and Daniel's total height?
3 m

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The average height of a group of 7 boys is 130 cm. When Carl, Eric and Daniel left the group, the average height decreased by 2 cm. What is Carl, Eric and Daniel's total height?