To solve this problem, we need to determine the value of x, which represents the number of dice Ivan has.
We know that Jerry has twice as many dice as Ivan. Therefore, Jerry has 2x dice.
The total number of dice they have together is 60.
We can set up the equation as follows:
Number of dice Ivan has + Number of dice Jerry has = Total number of dice
x + 2x = 60
Let's simplify and solve for x:
3x = 60
To isolate x, we divide both sides of the equation by 3:
3x / 3 = 60 / 3
x = 20
The value of x is 20.
#### 20
The answer is: 20
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
Ivan has x dice. Jerry has twice as many dice as Ivan. They have 60 dice altogether. What is the value of unknown variable x?

### Answer:
