Question 881834
if the digits of certain two digit positive integers are interchanged the resulting integer is 18 more than the original number what is the greatest possible value of the original integer 
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original #:: 10t + u
reversed # : 10u + t
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Equation:
10u+t - (10t+u) = 18
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9u - 9t = 18
u - t = 2
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If t = 1, u = 3:::: # = 13
If t = 2, u = 4:::: # = 24
If t = 3, u = 5:::: # = 35
etc..
If t = 7, u = 9::: # = 79 (greatest possible)
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Cheers,
Stan H.
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