Question

the digit at the tens place of a two digit number is three times the digit at the units place. if the digits are reversed, the new number will be 36 less than the original number. find the number ​

Answer 1

Answer:

3y=x (I)

10y+x=10x+y-36

9y-9x=-36

9x-9y=36

x-y=4

substitute x=3y

3y-y=4

y=2

x=6(3×2)