Question

the reduction of rs 12 in the selling price of an article will changes 5% gain into 2.5% loss. the cost price of the article is?

Answer 1

let the cost price be x

5% profit

cost price will be x + 5% of x = 105% of x

2.5% loss

cost price will be x - 2.5% of x = 97.5% of x

105% of x - 97.5% of x = 12

7.5% of x = 12

7.5/100 x = 12

x = 1200/7.5

x = 160

CP of the article is 160