To solve this, it is helpful to convert 4/5 to decimal form. We can do this by making the denominator equal to 100. 5 goes into 100 20 times, so if we multiply the top and bottom by 20, we get 80/100.
Now we can convert this to decimal form. 80/100 is simply .80.
Now, back to the original question...
.325 is clearly less than .8, or 4/5.
Hope this helps!