DIRECTION for the question: Solve the following question and mark the best possible option.

A man sells an article at a gain of 15%. If he had bought it at 10% less and sold it for Rs 4 less, he would have gained 2.5%. Find the cost price of the article

A

Rs. 170

B

Rs. 160

C

Rs. 150

D

Rs. 180

E

Rs. 190