if the selling price of 8 articles is same as the cost price of 10 articles . find the gain or loss percentage ?
"let the c . p of each article be re 1 . then , s . p of 8 articles = c . p of 10 articles = rs . 10 now , c . p of 8 articles = rs . 8 , s . p of 8 articles = rs 10 gain = rs ( 10 - 8 ) = rs 2 . gain % = ( 2 / 8 × 100 ) % = 25 % answer : a"
subtract(8, 10)