A man sells an article at a gain 15%. If he had bought it at 10% less and sold it for 5 less, he would have gained 25%. Find the cost price of the article.
Pick one.
A) 150	B) 160	C) 170	D) 180	E) 200
Let the C.P. be 100   First S.P. = 115   Second C.P. = 90   Second S.P = 125% of 90 = 112.50   Difference of two selling prices is 115 – 112.50 = 2.50 and C.P. of the article is 100   But actual difference is 5.   ∴ C.P. = 100⁄2.50 × 5 = 200.   Answer 200
<result>E</result>
A man sells an article at a gain 15%. If he had bought it at 10% less and sold it for 5 less, he would have gained 25%. Find the cost price of the article.