How many 750ml bottles of wine can be filled from a 15 liter barrel?

To find the number of 750ml bottles that can be filled from a 15-liter barrel, we need to divide the total volume of the barrel by the volume of each bottle.

1 liter is equal to 1000 milliliters, so 15 liters is equal to 15000 milliliters.

Each 750ml bottle can hold 750 milliliters.

Dividing the total volume (15000 milliliters) by the volume of each bottle (750 milliliters) will give us the number of bottles:

15000/750 = 20.

Therefore, 20 bottles of 750ml can be filled from a 15-liter barrel.