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Andrew [12]
3 years ago
7

I am a 2 digit number the sum of my digits is 12. the ones digit is twice the tens digit? who am i?

Mathematics
1 answer:
Bas_tet [7]3 years ago
5 0

Answer:

84

Step-by-step explanation:

let a be the 1's digit and b the 10's digit, then

a = 2b ← twice the 10's digit, thus

sum = 2b + b = 12, that is

3b = 12 ( divide both sides by 3 )

b = 4

and a = 2b = 2 × 4 = 8

The 2 digit number is 84

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