Question

the sum of a two-digit number is 12. the number formed by interchanging the digits is 54 more than the original number. what is the original number

Answer 1

The answer is 39!

Hope this helps!!

Answer 2

39

sum of 2 digit no. can be
3+9
4+8
5+7
6+6 (which cannot be the ans since interchanging the digits would give 0 difference)

so,
93-39=54
84-48=36
75-57=18

so 93 is the reversed no. and 39 is the original no.