A man sold 20 articles for $60 and gained 20%. How many articles should he sell for $40 to incur a loss 20%?	Choose the correct answer:
A) 20 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%: $40*(100% + 20%) = $48   Number of articles to be sold for $48 to incur a 20% loss: $48 / $2.40 = 20   Thus, solution 20 is correct.48 /  2.40= 
<gadget id="calculator">48 /  2.40</gadget>
<output>20</output>
20   Thus, solution 20 is correct.
<result>A</result>
A man sold 20 articles for $60 and gained 20%. How many articles should he sell for $40 to incur a loss 20%?