Question
Lucy put 506 marbles in three boxes M, N and P. Box M and Box N contained a total of 355 marbles. Box N and Box P contained a total of 342 marbles. How many marbles were there in Box M and Box P altogether?


4 m

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Lucy put 506 marbles in three boxes M, N and P. Box M and Box N contained a total of 355 marbles. Box N and Box P contained a total of 342 marbles. How many marbles were there in Box M and Box P altogether?