Question

During his hike milt drank 1 liter of water and 1 liter of sports drink how many milliliters of liquid did he drink

Answer 1

In total, he drank 2 liters.

In millimeters, this is:
2,000 milliliters.

1 liter = 1,000 milliliters
2 liters = 1,000×2
= 2,000 millimetres