Answered

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i am a two-digit number. The sum of my digits is 9. My ones digit is twice my tens digit. What number am i?


Sagot :

Let x be the tens digit
2x for ones digit

x+2x=9
3x=9
 
Divide both sides by 3 the answer is:
x=3

The number is 36

Proof:
x=3
2x=6
Adding them gives us 9
The answer is 63
Because : 
The sum of my digit is 9 : 6 + 3 = 9
My ones digit is twice my tens digit : 3 x 2 = 6