Question

I have 30 eggs, I broke ten, I sold five, I cook ten, and I fry ten. How many are remaining?
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Answer 1

15

Explanation:

You want to know remaining eggs from 30 after selling 5 and breaking, cooking, and frying 10.

Sold

The number remaining after 5 are sold is 30 -5 = 25.

Cooking

In order to cook the eggs by frying, you must break them. The 10 eggs that are broken and fried are the same 10 that are cooked. The number remaining whole and raw after 10 are cooked is ...

25 -10 = 15

Fifteen (15) eggs remain.

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Additional comment

Since only 10 are broken, it is possible that the 10 that are cooked remain unbroken. Perhaps they were boiled. In this case, the number of whole raw eggs may be 5, while the number of whole eggs (both raw and cooked, but not broken) could be 15. The question is ambiguous regarding how the eggs may be cooked and exactly what constitutes "remaining." It is a riddle with different possible answers.

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