Question

A baker is selling pies his first customer buys 1/2 of all the pies plus 1/2 of a pie. His second customer then buys 1/2 of the pies plus 1/2 of a pie the last customer buys 1/2 of the pies plus 1/2 pie. he has no more pies. how many did he start with?

Answer 1

7 pies

Explanation:

last customer: ½+½= 1

second customer =( 1×2)+1 = 3

first customer = (3×2)+1 = 7