Question

the tens digit of a number is three times the units digit . The sum of the number and its unit digit is 32 . Find the number​

Answer 1

Answer:

Let the ones's digit =x

Therefore, tens's digit =3x

Original number =10(3x)+x=31x

Sum of number + unit digit =32

⇒31x+x=32

⇒x=1

Tens digit will be 3x=3.

Therefore, the number is 31.