a fruit seller sells mangoes at the rate of rs . 8 per kg and thereby loses 20 % . at what price per kg , he should have sold them to make a profit of 5 %
explanation : 80 : 8 = 105 : x x = ( 8 × 105 / 80 ) = rs 10.5 option c
divide(multiply(8, add(const_100, 5)), subtract(const_100, 20))