Question
The average number of cookies in Box K, Box L and Box M is 36. Box K has 30 cookies. The number of cookies in Box L is twice the number of cookies in Box M. What is the number of cookies in Box M?
2 m

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The average number of cookies in Box K, Box L and Box M is 36. Box K has 30 cookies. The number of cookies in Box L is twice the number of cookies in Box M. What is the number of cookies in Box M?