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What number am I

My tens digit is double my ones digit. I am less than 70 greater than 60?

How do u figure this out need help to explain how to get the answer..

x + 20 x = 21 x

60 < 21 x <70

try x = 3

63

Alternatively

"If I am less than 70 greater than 60? "

then the possibles are 61, 61 ....69

so the tens is always 6

then if
"My tens digit is double my ones digit."

then the ones digit is 6/2=3

If the number is less than 70 and greater than 60, the tens digit has to be 6. Now, if the ones digit is half the tens digit, divide 6 in half. The answer is 63.

same as the others 63

53-35

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