The difference between a two-digit number and the number after interchanging the position of the two...
The difference between a two-digit number and the number after interchanging the position of the two digits is 27. What is the difference between the two digits of the number?
Answer/Solution
3
Steps/Work
Let the two-digit no. be l0x + y.
Then, (10x + y) – (10y + x) = 27
or, 9(x – y) = 27
or, x – y = 3
Answer C
Then, (10x + y) – (10y + x) = 27
or, 9(x – y) = 27
or, x – y = 3
Answer C