Question:
Brenda and Joe had $420 altogether. After Brenda spent 5/8 of her money and Joe spent 1/4 of his money, the amount of money Joe had became thrice as much as Brenda. How much money did Joe have at first?

Solution:

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Brenda and Joe had $420 altogether. After Brenda spent 5/8 of her money and Joe spent 1/4 of his money, the amount of money Joe had became thrice as much as Brenda. How much money did Joe have at first?