A jug had 1 29 of juice. All of it was poured equally into some glasses. Each glass had 19 L of juice. How many glasses could be filled with the juice?

To determine how many glasses can be filled, first convert 1 29 of juice into a proper fraction. Assuming "1 29" means 1 and 29/100, this equals 129/100 liters of juice. Each glass contains 19 liters, so you divide 129/100 by 19, which is approximately 0.678. Since you can't fill a fraction of a glass, only 0 full glasses can be filled with that amount of juice.