Question 1101100
First sentence means, number might be any of 18, 27, 36, 45, 54, 63, 72, 81.



t for TENS
u for ONES
---------------------------------------------------------------------
the Number formed by <s>revising</s>REVERSING the digits exceeds twice the original number by 18.
---------------------------------------------------------------------


{{{highlight_green(t+10u-2(10t+u)=18)}}}

-

{{{t+10u-20t-2u=18}}}
{{{-19t+8u=18}}}
{{{8u-19t=18}}}



System:  {{{system(8u-19t=18,u+t=9)}}}


{{{8(9-t)-19t=18}}}
{{{72-8t-19t=18}}}
{{{-27t+72=18}}}
{{{27t-72=-18}}}
{{{27t=72-18}}}
{{{highlight(t=2)}}}



The original number is 27.