Question

n a two-digit number, the unit digit is twice the tens digit. Find the original number in terms of a variable

Answer 1

Answer:

Let unit's digit =x and ten's digit =y

∴ Number =10y+x

Reverse number =10x+y

According to the question

2y=x...(i)

10y+x+27=10x+y ...(ii)

⇒10y+2y+27=20y+y

12y−21y=−27

−9y=−27⇒y=3

x=6

∴Number=36

Answer 2

Answer:

this answer is correct

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