Question 990431: The sum of the digit of two digit is 8..if the number is reversed the number is decreased by 54.find the number Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! The sum of the digit of two digit is 8..if the number is reversed the number is decreased by 54.find the number
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Number:: 10t+u
Reverse:: 10u+t
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Equation:
t + u = 8
10t+u - (10u+t) = 54
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t+u = 8
9t-9u = 54
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Modify for elimination::
t + u = 8
t - u = 6
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2t = 14
t = 7
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u = 1
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Original Number:: 10t+u = 71
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Cheers,
Stan H.
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