Question
Yen has twice the number of marbles as Mary. Tammy has thrice the number of marbles as Yen. If Tammy has 336 marbles, how many marbles do the three girls have altogether?
2 m

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Yen has twice the number of marbles as Mary. Tammy has thrice the number of marbles as Yen. If Tammy has 336 marbles, how many marbles do the three girls have altogether?