Question

a number consists of two digit. the sum of digit is 12. if 36 is subtracted from the number the digits changed their places. find the number

Answer 1

Answer:84

Step-by-step explanation:

Let the two digits of the number be x and y.

Therefore,A/Q,

x+y=12

=>x+y-12=0...I

Now, it is said that on subtracting 36 from the number, it's digits reverse.

Therefore,

10x+y-36=10y+x

9x-9y-36=0

=>x-y-4=0[dividing both sides by 9]...ii

Now, adding I and ii we get,

2x=16

=>x=8

Therefore, 12-8=4

Therefore the required number is 84.