The first buyer: 0.5x+ 1, and the remaining 0.5x- 1.

The second person bought: 0.5 (0.5x-1)+1= 0.25x+0.5, and the remaining 0.25x- 1.5.

The third person bought: 0.5 (0.25x-1.5)+1= 0.125x+0.25, and there was nothing left.

So:

0.25 x- 1.5 = 0. 125 x+0.25

That is 0. 125x= 1.75.

Get x= 14.

A: * * * sold 14 eggs.

It's better to put off this kind of question, which will be easier.

It's just over.

Then last time there was1÷ (1-1/2) = 2.

Last time there was (2+1) ÷ (1-1/2) = 6.

Last time: (6+1) ÷ (1-1/2) =14.