Question

a two digit number is such that the sum of its digit is 8.if 54 is subtracted from the number its digits are reversed find the number

Answer 1

Let the number be 10x + y.

A / q ,

X + Y = 8 ... 1

10 x + y - 5 4 = 10 y + x

= 10 x + y - 10 y - x = 5 4

= 9x - 9y = 54

= ( x - y ) = 54 / 9 = 6 ... 2

Adding 1 and 2..

X + Y + X - Y = 8 + 2

= 2X = 10

= X = 5

And y = 3

Number = 53 Ans.