Question
Mary bought a sack of potato starch on Day 1 and cooked 112 kg of potato starch every day. By Day 7, she was 12 kg short of potato starch. On which day did she finish cooking 35 of the potato starch in the sack? Give your answer in number. (Eg Day 1 = 1)
3 m

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Mary bought a sack of potato starch on Day 1 and cooked 112 kg of potato starch every day. By Day 7, she was 12 kg short of potato starch. On which day did she finish cooking 35 of the potato starch in the sack? Give your answer in number. (Eg Day 1 = 1)