Question

The sum of digits of a two number is 9.the digitsin the ones place is 1more than 3 times the digit in the tens place.find the number.

Answer 1

Let

Digit in the ones place is "Y"

And

Digit in the tenth place is "X"

Then number is "XY"

Given

Y= 3X+1

also given

X+Y = 9

So

X+3X+1 =9

4X =8

X= 8/4 = 2

So X = 2 and Y =7

And the number is 27