Asked by Arya

The tens digit of a certain number is five more than the units digit. The sum of the digits is 9. Find the number.
Answered by Reiny
unit digit ---- x
tens digit ---- x+5

x + x+5 = 9

carry on, should be able to do it mentally.
Answered by Vera
x+ x + 5 = 9
9 - 5 = 4
there are two x's
4 / 2 = 2
x = 2
units digit = 2
2 + 5 = 7
tens digit = 7
number = 72
Answered by Anonymous
x+ x + 5 = 9
9 - 5 = 4
there are two x's
4 / 2 = 2
x = 2
units digit = 2
2 + 5 = 7
tens digit = 7
number = 72
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