The sum of two numbers is 36 One number is 2 times as large as the other. What are the numbers?

Let's call the smaller number x and the larger number y.

From the given information, we can set up two equations:

x + y = 36 (Equation 1)
y = 2x (Equation 2)

We can substitute Equation 2 into Equation 1:

x + 2x = 36
3x = 36
x = 12

Now we substitute the value of x back into Equation 2 to find y:

y = 2*12
y = 24

Therefore, the two numbers are 12 and 24.