A and B have a certain number of mangoes. A says to B, “If you give me 30 of your mangoes, I will have
as many as left with

A and B have a certain number of mangoes. A says to B, “If you give me 30 of your mangoes, I will have
as many as left with you”, B replies, “If you give me 10, I will have thrice as many as left with you”. How
many mangoes each has?

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