Question

The ten digit of a number is four times it's wonders ones digit if 27 is subtracted from the number the digit of the difference obtained are reverse of those of the number find the number

Answer 1

Let the 10 digits is x

And ones place is y

ATQ

x=4y

Also

10x+y-27=10y+x

-27=9y-9x

Put x=4y

-27=9y-36y

-27=-27y

y=1 and x=4

So no is 41