Answer:
There'd be a 10-plot difference.
Step-by-step explanation:
If small plots are 1/6 th of an acre, then the number of small plots possible is
5 acres
-------------------- = 30 plots
(1/6) acre/plot
If medium plots are 1/4 th of an acre, then the number of medium plots possible is
5 acres
-------------------- = 20 plots
(1/4) acre/plot
Thus, 30 small plots versus 20 medium plots would fit; the difference is 10 plots.