The difference between a two-digit number and the number obtained by interchanging the positions of its digits is 36. What is the difference between the two digits of that number?
Pick:
A) Difference is 3
B) Difference is 4
C) Difference is 9
D) Cannot be determined
E) None of these
EXPLANATION   Let the ten’s digit be x and unit’s digit be y.   Then, (10x + y) – (10y + x) = 36   9(x – y) = 36   x – y = 4.   Answer Difference is 4
<result>B</result>
The difference between a two-digit number and the number obtained by interchanging the positions of its digits is 36. What is the difference between the two digits of that number?