Answer:
The market price in percentage of the the article is 31.5%.
Explanation:
Given : If an article costs a store $17.45 and if it sells the article for $22.95.
To find : What percentage markup is it using?
Solution : 
The cost price of the article is CP=$17.45
The selling price of the article is SP=$22.95
Market price formula is 




The market price of the article is $0.315.
MP into percentage, 

Therefore, The market price in percentage of the the article is 31.5%.