10 ladders with 50 rungs have a total of 10*50=<<10*50=500>>500 rungs.

20 ladders with 60 rungs have a total of 20*60=<<20*60=1200>>1200 rungs.

In total there are 1200+500=<<1200+500=1700>>1700 rungs.

The client must pay 2*1700=$<<2*1700=3400>>3400.

# Answer

3,400
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Jacob is building ladders. One of his clients needs 10 ladders with 50 rungs, and 20 ladders with 60 rungs. Jacob has to charge $2 for every rung. How much does the client have to pay for the ladders?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
3,400
Jacob is building ladders. One of his clients needs 10 ladders with 50 rungs, and 20 ladders with 60 rungs. Jacob has to charge $2 for every rung. How much does the client have to pay for the ladders?
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