SOLUTION: The ten's digit of a two digit number is 2 less than the unit's digit. The value of the number is 7 times the unit's digit. find the digits and the value of the number.
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Question 68277: The ten's digit of a two digit number is 2 less than the unit's digit. The value of the number is 7 times the unit's digit. find the digits and the value of the number.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The ten's digit of a two digit number is 2 less than the unit's digit. The value of the number is 7 times the unit's digit. find the digits and the value of the number.
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Let the units digit be "x".
The ten's digit is "x-2".
The value of the number is 10(x-2)+x=11x-20
EQUATION: 11x-20=7x
4x=20
x=5 (this is the units digit)
x-2=3 (this is the 10's digit)
The value of the number is 35
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Cheers,
Stan H.
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