Question

Sum of the digits of a two-digit number is 11. the given number isless than the number obtained by interchanging the digits by 9.find the number.put it fast

Answer 1

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

Thus the two digit no. Is 10x+y

Now according to question

x+y is equal to 11

By interchanging digits new two digit no. Is 10y+x

(10y+x)-(10x+y) is equal to 9

10y+x-10x-y is equal to 9

9y-9x is equal to 9

y-x is equal to 1

We know x+y is equal 11

2y is equal 12,y is equal 6

6-x is equal 1

x is equal to 5.

Answer 2

I hope this explanation will help you