Let's break down the sequence of events step by step:

1. Starting pears: 30
2. Eat 5: $30 - 5 = 25$
3. Eat 5 more: $25 - 5 = 20$
4. Buy 5: $20 + 5 = 25$
5. Eat 5 more: $25 - 5 = 20$
6. Eat 5 more: $20 - 5 = 15$
7. Buy 5: $15 + 5 = 20$
8. Eat 5 more: $20 - 5 = 15$
9. Eat 5 more: $15 - 5 = 10$
10. Buy 5: $10 + 5 = 15$
11. Buy 5 more: $15 + 5 = 20$
12. Eat 5 more: $20 - 5 = 15$
13. Eat 10: $15 - 10 = 5$
14. Eat 2: $5 - 2 = 3$
15. Eat 3: $3 - 3 = 0$
16. Buy 5: $0 + 5 = 5$
17. Eat 5: $5 - 5 = 0$

After following all these steps, you would have 0 pears left.

Would you like further details or have any questions?

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Here are 5 related questions to consider:

1. What would happen if you started with more pears?
2. How many pears do you buy in total?
3. How many pears do you eat in total?
4. What if you added or subtracted more steps?
5. What would be the outcome if you ate fewer pears each time?

Tip: When solving problems with a sequence of operations, writing each step out clearly helps in keeping track of the changes.