Answer:
19.8 ≈20.
Explanation:
Given : 22% of 90
To Find: What is the best estimate of 22% of 90
Solution:
Since we are given that :
we need to calculate the best estimate of 22% of 90
⇒22% of 90
⇒

⇒

⇒

Thus 19.8 is 22% of 90
Hence the best estimate of 22% of 90 is 19.8 ≈20.