The reduction of $ 12 in the selling price of an article

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The reduction of $ 12 in the selling price of an article will change 5% gain into (2 ¹ / ₂ )% loss. The cost price of the article is

1. $ 140
2. $ 160
3. $ 80
4. $ 100

Correct Option: B

If the C.P. of article be $ y,
then
According to question ,

y ×		105 -	195			% = 12
			2

⇒ y ×		15	= 12 ⇒ y =	12 × 200	= $ 160
		200		15