First, we represent the ratio as a fraction.
30:6 can be expressed as the fraction 30/6.
The next step is to simplify this fraction. To simplify a fraction, we divide both the numerator and the denominator by their Greatest Common Divisor (GCD).
The GCD of 30 and 6 is 6. This is the largest number that can exactly divide both 30 and 6.
We divide both the numerator and denominator of our fraction by the GCD.
Hence, 30/6, when divided by 6, gives us 5/1.
So, the ratio 30:6 simplifies to 5:1 in simplest form.