Question

A 2 digit number is such that the sum of its digits is 4. If 8 is added to the number , its digits are reversed . Find the number​

Answer 1

Answer:

Correct option is A)

Let the number be 10x+y

According to question, we have,

x+y=4

18+10x+y=10y+x

⇒18+9x=9y

⇒2+x=y

⇒2+x=4−x

⇒2x=2

⇒x=1

y=4−x=4−1=3

Number is 10x+y=10×1+3=13