We have to find the percentage ratio of two numbers. It is

. And the correct answer is D).
Alternatively, by setting up a ratio, we can write that If
400_____100%
36_____x
And x=9%
Sequence: 2 + 1 + 1/2 + 1/4 + 1/8 + ...
Explanation:
Here Given Sum to Infinity

Identify following
Solve:


The sum of this infinity series is 4
Answer:
True.
Step-by-step explanation:
It explains itself right