Total number of chololates =14
We know, 1 week=7 days
Number of days the chocolate stock must last =7
Number of cholcolates to be consumed per day=Total number of chocolatesTotal number of days
=147 chololates
=2×77 chololates
=2 chololates
∴ If Ethan chooses to have 2 chololates per day, then his stock would last one week.