How many eggs did you buy originally?

Question

You've bought your weekly egg supply at the local farm store. The first morning you have company for breakfast and use half the eggs plus one-half an egg. The next morning you use one-half of what's left plus one-half an egg. The third morning you use one-half of what's left plus one-half an egg, and on the fourth morning, you're down to one solitary egg, so you make French toast. In all this cooking, you've never had one-half an egg to carry over to the next day.
How many eggs did you buy originally?

Answer 1

He start with 15 eggs
Half of 15 - 0.5=7
Half of 7 - 0.5=3
Half of 3 - 0.5= 1
Fourth day remains with this 1 solitary egg