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Jason gave 20% of his marbles to Henry. The ratio of Jason’s marbles to Henry’s marbles became 3:1.
a) What was the ratio of the number of marbles Jason had to the number of marbles Henry had at first?
b) After giving the marbles to Henry. Jason played a game with Henry. Jason lost some marbles to Henry and the ratio became 5:4. If Jason still had 16 marbles more than Henry, how many marbles did Jason have before the game?