To round a fraction to nearest hundredth:
simplify the fraction
divide it to get decimal
round to nearest hundredth (2 decimal places)
Our fraction reduced:

Dividing 20 by 21, we get the decimal:

We want to round it to nearest hundredth (2 decimal place).
The third decimal is "2", so we don't round up the 2nd decimal.
So, the answer is:
0.95