quick answer guys please
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i think ur answer is 19.
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Let the unit digit be y and tens digit be x
the number will be 'xy' i.e. (10x+y)
From question,
x+y=11
the number obtained on reversing will be 'yx' i.e. (10y+x)
From question,
10y+x +9=10x+y
9y+9=9x
x-y=1
on solving the equations (x+y=11) and (x-y=1) we get,
x=6 and y=5
Hence, the number will be (10x+y)=65
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