There is a 36-point difference between a two-digit number and the number generated by swapping the digits. If the ratio between the digits of the number is 1: 2, what is the difference between the sum and the difference of the digits?
A. 4
B. 8
C. 16
D. None of these
Answer:B
There is a 36-point difference between a two-digit number and the number generated by swapping the digits. If the ratio between the digits of the number is 1: 2, what is the difference between the sum and the difference of the digits?
A. 4 B. 8 C. 16 D. None of these
Explanation: The tenth digit is more than the unit digit because the number is bigger than the number produced by reversing the digits.Let the digits for the tens and units be 2x and x, respectively.The solution is (10 x 2x + x) - (10x + 2x) = 36.36 = 9x,x equals 4.2x = 8 (required difference = (2x + x) - (2x - x).