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On the first day, the monkey kept 3/4 of 60, which is 45. Then, he ate one, so he had 44 peaches left. On the second day, the monkey kept 7/11, which is 28. Then, he ate one, so hen ended up with 27 peaches. On the third day, he kept 5/9 of his peaches, which is 15. Then he ate one, which then makes 14 peaches. On the fourth day, the monkey kept 2/7, which is 4. Then he ate one, so he had 3 peaches. On the fifth and final day, the monkey kept 2/3, which is 2. Then he ate one. So on the sixth day, the monkey only had 1 peach left.