If the cost price of 8 articles is the same as the selling price of 10 articles. Find the gain or loss percentage?
Choose the most appropriate option:	A) 20% gain	B) 20% loss	C) 30% gain	D) 30% loss	E) 40% loss
Explanation:   Ex:-   2X = 3Y   X = 3   Y = 2   12 cp = 15 sp   Cost price CP = 15   Selling price SP = 12   Formula = (SP-CP)/CP * 100 = (12 - 15)/10 * 100 = 30 % Loss   Answer: Option 30% loss
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If the cost price of 8 articles is the same as the selling price of 10 articles. Find the gain or loss percentage?