Question

a number has two digit whose sum is 9 . if 27 is added to the number , its digit gets interchanged . find the number​

Answer 1

Answer:

$27 + 9 \: is \: a \: and \\ answer$

Step-by-step explanation:

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Answer 2

Answer

hope this will help you

Step-by-step explanation:

Step 1: Let the unit's digit be x

Step 2: Then, ten's digit =(9−x)

∴ number =10×(9−x)+x⇒90−10x+x=(90−9x)

Step 3: Adding 27 to the number 90−9x we get 117−9x

Step 4: Number with digits interchanged is 10x+(9−x)=9x+9

Step 5: 117−9x=9x+9

Step 6: Therefore unit's digit=6 and ten's digit =3

Step 7: Hence the number =36.