Question

In a two digit number, the unit’s digit is twice the ten’s digit. If 27 is added to the number,the

digits interchange their places. Find the number.
please explain otherwise reported​

Answer 1

Answer:

36

Step-by-step explanation:

tens digit=x

ones digit=2x

no. 1= 10x+2x

no. 2= 10(2x)+x

10x+2x+27=10(2x)+x

12x+27=20x+x

12x+27=21x

27=21x-12x

27=9x

27/9=x

x=3

so, the no. is 36