 
 <translate> First find how long the first trail takes to hike: 20 miles / 5 miles / hour = 4 hours. Then find how long James spends hiking the second trail: 12 miles / 3 miles / hour = 4 hours. Then add the 1 hour break James has to take on the second trail: 4 hours + 1 hour = 5 hours. Then subtract the time for the first trail from the time for the second trail to find the difference: 5 hours - 4 hours = 1 hour.
Therefore, the answer is 1. <ibo> Buru ụzọ chọpụta ogologo oge ọ ga-ewe gị ịga ije n'okporo ụzọ nke mbụ ahụ: kilomita iri abụọ na ise n'otu awa ma ọ bụ kilomita ise n'otu awa = awa anọ. Chọpụtazie awa ole James na-eji aga ije nke abụọ ahụ: kilomita iri na abụọ / kilomita atọ n'otu awa = awa anọ. Mgbe ahụ, gbakwunye oge ezumike nke awa 1 nke James ga-ewere n'ụzọ nke abụọ: awa 4 + 1 awa = awa 5. Mgbe ahụ, wepụ oge maka ụzọ nke mbụ site na oge maka ụzọ nke abụọ iji chọpụta ihe dị iche: awa 5 - awa 4 = 1 awa. Ya mere, azịza ya bụ 1. 