Question
Sabrina had some lollipops. She sold 70% of her lollipops and gave half of the remainder to her sister. After that, she bought 15 lollipops and had a total of 42 lollipops in the end. How many lollipops did Sabrina have at first?
4 m

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Sabrina had some lollipops. She sold 70% of her lollipops and gave half of the remainder to her sister. After that, she bought 15 lollipops and had a total of 42 lollipops in the end. How many lollipops did Sabrina have at first?