Let the two numbers be x and y.
Given,
x = 2y
Also given,
x + y = 23
2y + y = 23
3y = 23
y = [tex] \frac{23}{3} [/tex] = 7.6666666666667 ≈ 7.66
x = 2y = 2*[tex]\frac{23}{3}[/tex]=[tex]\frac{46}{3}[/tex] = 15.333333333 = 15.33
Hence, the two numbers are 7.66 and 15.33