Final answer:
There are 15 glasses that can be filled from the jug.
Step-by-step explanation:
To find out how many 1/5 liter glasses can be filled from the 3 liter jug, we need to divide the volume of the jug by the volume of each glass. Since there are 5 glasses in 1 liter, there are 5 x 1/5 = 1 glass in 1/5 liter. Therefore, there are 3 x 5 = 15 glasses that can be filled from the jug.