When the price of an article was reduce by 20%, its sale increased by 80%. What was the net effect on the sale ?

When the price of an article was reduce by 20%, its sale increased by

1.	When the price of an article was reduce by 20%, its sale increased by 80%. What was the net effect on the sale ?
A.	4% increase
B.	4% decrease
C.	6% increase
D.	5% increase
Answer» B. 4% decrease

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When the price of an article was reduce by 20%, its sale increased by 80%. What was the net effect on the sale ?

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