Mathematics, 11.02.2021 14:10 jalenm266

Jim and Alvin have a total of 360 Pokemon cards, The ratio of the number of Jim's cards to the number of Alvin's cards is 7:2
Alvin buys some cards from Jim,
The ratio of the number of Jim's cards to the number of Alvin's cards is now 7:5
How many cards does Alvin buy from Jim?
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Jim and Alvin have a total of 360 Pokemon cards, The ratio of the number of Jim's cards to the numb...