Question

Is 0.4/0.8 rational or irrational ?

Answer 1

`\Huge \boxed{\mathrm{ Rational }}`

Explanation:

Rational numbers can be expressed as fractions with whole numbers as the numerator and the denominator.

`\displaystyle (0.4)/(0.8)`

Multiply both the numerator and the denominator by 10.

`\displaystyle (4)/(8) =(1)/(2)`

The result is a simplified fraction with both the numerator and the denominator being whole numbers. The result is rational.