Jerry has 2 x 20 = <<2*20=40>>40 dice.

Therefore, they have 20 + 40 = <<20+40=60>>60 dice altogether.

# Answer

60
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Ivan has 20 dice. Jerry has twice as many dice as Ivan. How many dice do they have altogether?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
60
Ivan has 20 dice. Jerry has twice as many dice as Ivan. How many dice do they have altogether?
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