Final answer:
The ratio of 84c to 92c is 21c/23c.
Step-by-step explanation:
To write the ratio as a fraction in simplest form, we need to divide both the numerator and the denominator by their greatest common divisor (GCD). The GCD of 84 and 92 is 4.
So, the ratio of 84c to 92c can be written as:
(84c/4)/(92c/4) = 21c/23c
Therefore, the ratio of 84c to 92c is 21c/23c.