They need not be. For example, the length of the hypotenuse of a unit right angled triangle, as a percentage of its perimeter is not rational. There are infinitely more irrational percentages than there are rational ones, so the question is based on a falsehood.
The answer will depend on whether you want percentage equivalents of rational numbers or one rational number as a percentage of another.
Any percentage is simply a rational number, with the denominator of 100. So multiply them all by 100 and order the resulting rational numbers.
There are several ways: convert them all into decimal (or percentage) notation and order these. Or subtract the rational numbers in pairs. If the answer is positive then the first of the two is larger.
If there are no numbers after the 9 it is rational
No. Rational numbers are numbers that can be written as a fraction. All rational numbers are real.
The set of rational numbers includes all whole numbers, so SOME rational numbers will also be whole number. But not all rational numbers are whole numbers. So, as a rule, no, rational numbers are not whole numbers.
Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction. All natural numbers are rational.
6.6 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.
The set of rational numbers includes the set of natural numbers but they are not the same. All natural numbers are rational, not all rational numbers are natural.
All rational numbers are not whole numbers, as rational numbers can include fractions.
They do not. There is no relationship between rational numbers and rational decisions.
All rational numbers are real numbers.