Anyone (any system) that agrees with you.
All the various systems are actually rational.
for example if you are baking a cake you need to know the measurement of flour,etc...to put in it.you use a measuring cup,the measurement in an measurement cup is written in rational numbers(fraction. )
old system of measurement English system of measurement
metric system
Most of the world uses the metric system for measurement.
The metric system is mostly a decimal system of measurement.
what is the system of measurement adoptd by the philippines
The metric system uses kilograms as a unit of measurement for mass.
The metric system is accepted as the dominate measurement system in the world.
12 is a rational number. Incidentally, there is no such time as 12 am or 12 pm: they are 12 noon and 12 midnight. Furthermore, if it was a time then it would not be a number (numbers do not have measurement units associated with them) and so it could not be rational.
Feet and inches are part of the Imperial measurement system.
Ounces and feet are units of measurement in the English system.
grams in the CGS measurement system, Kilograms in the Si and MKS system, or pounds in the FPS measurement system.