Which unit is commonly used in both the metric and u. s system of units

The unit of time - seconds

Step-by-step explanation:

The metric system uses units such as meter, liter, and gram to measure length, liquid volume, and mass.

Whereas in the US system of units, units like feet, quarts, and ounces to measure these.

But 'seconds' the base unit of time, is the unit that is used in both the system of units.

Step-by-step explanation:

Surely the units of time: minut, hour, second.