Question 830895
Figure out how many eggs each hen lays in 6 days, and then add them together.
Hen A lays 1 per day.  1*6 = 6
Hen B lays 1 every 2 days.  1/2 * 6 = 3
Hen C lays 1 every 3 days.  1/3 * 6 = 2
.
Total = 6 + 3 + 2
=11 eggs in 6 days

(Well, crud, I read that as the second hen lays every OTHER day.)