Question
The distance between Risa's home and the stationery kiosk is 230 m. After walking a distance from her home to the stationery kiosk, she stopped and walked 30 m back to a park. If the park is 150 m away from her home, how far had she walked before she stopped and walked back?
2 m

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The distance between Risa's home and the stationery kiosk is 230 m. After walking a distance from her home to the stationery kiosk, she stopped and walked 30 m back to a park. If the park is 150 m away from her home, how far had she walked before she stopped and walked back?