Cost price of article = 48$
% of overhead cost = 20
Net profit = 12 $
We need to calculate % markup
Net profit as % of cost price = (12/48)*100 = 25%
Total markup should be = 25 + 20 = 45%
The purchase price of an article is $48. In order to include 20% of cost for overhead and to provide $12 of net profit, the markup should be

1) 15%
2) 25%
3) 35%
4) 40%
5) 45%