A man sold 20 articles for $60 and gained 20%. How many articles should he sell for $50 to incur a loss 20%? Choose the correct choice from the following answers.
A) 25 B) 36 C) 40 D) 50 E) 48
Production cost per article: $60*(100%-20%) / 20 = $2.40   Required production costs for a loss of 20%: $50*(100% + 20%) = $60   Number of articles to be sold for $60 to incur a 20% loss: $60 / $2.40 = 25   Thus, solution 25 is correct.60 /  2.40= 
<gadget id="calculator">60 /  2.40</gadget>
<output>25</output>
25   Thus, solution 25 is correct.
<result>A</result>
A man sold 20 articles for $60 and gained 20%. How many articles should he sell for $50 to incur a loss 20%?