Question
Erika had 40 more cards than Jane at first. Jane gave 10 of her cards to Erika. Erika now has 3 times as many cards as Jane. How many cards did Jane have at first?
2 m

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Erika had 40 more cards than Jane at first. Jane gave 10 of her cards to Erika. Erika now has 3 times as many cards as Jane. How many cards did Jane have at first?