Question
Penelope had thrice as many marbles as cards at first. She removed 6 marbles and 3 cards each time. In the end, there were 18 marbles and 1 card left. How many marbles and cards did Penelope have at first?
4 m

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Penelope had thrice as many marbles as cards at first. She removed 6 marbles and 3 cards each time. In the end, there were 18 marbles and 1 card left. How many marbles and cards did Penelope have at first?