Problem: difference between a two - digit number and the number obtained by interchanging the two digits is 36 , what is the difference between two numbers
Rationale: explanation : let the ten digit be x , unit digit is y . then ( 10 x + y ) - ( 10 y + x ) = 36 = > 9 x - 9 y = 36 = > x - y = 4 . option b
annotated_formula: divide(36, subtract(const_10, const_1))