Question
The average number of cupcakes in Box P, Box Q and Box R is 30. Box P has 40 cupcakes. The number of cupcakes in Box Q is four times the number of cupcakes in Box R. What is the number of cupcakes in Box R?
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The average number of cupcakes in Box P, Box Q and Box R is 30. Box P has 40 cupcakes. The number of cupcakes in Box Q is four times the number of cupcakes in Box R. What is the number of cupcakes in Box R?