Question

the two digit number is such that the sum of its digit is 4.if 8 is added to the number,its digit are reversed.find the number​

Answer 1

Answer:

13

Step-by-step explanation:

Let the number be 10x+y

According to question, we have,

x+y=418+10x+y=10y+x

⇒18+9x=9y

⇒2+x=y

⇒2+x=4−x

⇒2x=2

⇒x=1y=4−x=4−1=3

Number is 10x+y=10×1+3=13

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