Problem: boy sells a book for rs . 630 he gets a loss of 10 % , to gain 10 % , what should be the sp ?
Rationale: "cost price = 630 / 90 x 100 = 700 to gain 10 % = 700 x 10 / 100 = 70 sp = cp + gain = 700 + 70 = 770 answer : d"
annotated_formula: add(divide(630, subtract(const_1, divide(10, const_100))), multiply(divide(630, subtract(const_1, divide(10, const_100))), divide(10, const_100)))