Question
PSLE
At first, Lucy had 70 stickers and some marbles. After she gave away 57 stickers and 30% of the marbles, she had a total of 69 stickers and marbles. How many marbles did Lucy give away?
3 m

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PSLE
At first, Lucy had 70 stickers and some marbles. After she gave away 57 stickers and 30% of the marbles, she had a total of 69 stickers and marbles. How many marbles did Lucy give away?