Question

The sum of the digits of a number is 13, and the difference between the number and that formed
reversing the digits is 27: find the numbers.
A certain number of two digits is three time the sum of its digits, and if 45 be added​

Answer 1

Answer:

The sum of the digits of a number is 13, and the difference between the number and that number and that number and that formed by reversing the digits is 27 find the numbers?

Is low blood oxygen levels (SpO2) dangerous?

Lets assume a 2 digit number xy.

We can express xy as [math]10*x+y[/math]

Now according to given scenario-

[math]x+y=13[/math]-(1)

Also,

[math]10*x+y-10*y-x=27[/math]

This implies

[math]9*x-9y=27[/math]

Hence

[math]x-y=3[/math]-(2)

Adding 1 and 2 we get -

[math]2*x=16[/math]

Hence x=8

Substituting x in (