Answer:
The answer is

Explanation:
In order to determine the simplest form, we have to know about ratio.
The ratio is a division of two values, it means, it is a fraction. In this case, we have a fraction both in the numerator as in the denominator.
When we have a fraction in the denominator, we have to change the operation from division to multiplication and the fraction in the denominator is inverted.
So,

Finally, the simplest form of the ratio is
