In the first part of her trip, Diana will cover 2 hours * 3 mph = <<2*3=6>>6 miles.

In the second part of her trip, Diana will need to cover an additional 10 miles - 6 miles = <<10-6=4>>4 miles.

To cover 4 miles * 1 mph = will take Diana <<4*1=4>>4 hours.

Total biking time to get home for Diana will be 2 hours + 4 hours = <<2+4=6>>6 hours.

# Answer

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<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Diana needs to bike 10 miles to get home.  She can bike 3 mph for two hours before she gets tired, and she can bike 1 mph until she gets home.  How long will it take Diana to get home?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
6
Diana needs to bike 10 miles to get home.  She can bike 3 mph for two hours before she gets tired, and she can bike 1 mph until she gets home.  How long will it take Diana to get home?
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