interesting number
Number Theory
Level
pending
what is the number which's sum of digits multiplying by 3 then the answer will that number?
The answer is 27.
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1 solution
The digits, x and y where x= 10ths and y=unit digit. Therefore, sum of the digits multiplied by 3 must equal to the number. =>10x+y=3(x+y) =>10x + y=3x+3y =>7x-2y=0 Find the values ( integers) that satisfies this equation.