SOLUTION
Given the question in the image, the following are the solution steps to answer the question.
STEP 1: Define the key terms

STEP 2: Match the symbol to the meaning
Hence, the correct meaning matching will be:
1/10
All you have to do is divide the numerator by the denominator
In this case 1 divided by 10 = 0.1
Hope this helps
The answer to this question will be B
Decrease = (original number - new number) / original number .....x 100
decrease = (49 - 22) / 49.....* 100 =
(27 / 49) * 100 =
2700 / 49 = 55% decrease