Question
There are some muffins in the jar. On Saturday, Ivan ate 29 of the muffins. He later bought 28 muffins and added into the jar. On Sunday, Ivan ate 40 muffins. He was hungry and ate another 37 muffins. There were no muffins left. How many muffins were there in the jar at first?
4 m

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There are some muffins in the jar. On Saturday, Ivan ate 29 of the muffins. He later bought 28 muffins and added into the jar. On Sunday, Ivan ate 40 muffins. He was hungry and ate another 37 muffins. There were no muffins left. How many muffins were there in the jar at first?