题目来源
题目来源1 : The Princeton Review
正确率：82%
难度：3
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John and James walk from point x to point z (shown in the figure above). John walks directly from x to y on Path a and then directly from y to z on Path b. James walks directly from x to z on Path c. If Path a is 13 miles long and Path b is 5 miles long, John walks about how many miles longer than James?
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以上解析由 考满分老师提供。
