Problem Solving
试题详情
题目：
Richard leaves to visit his friend who lives 200 miles down Interstate 10. One hour later his friend Steve leaves to visit Richard via Interstate 10. If Richard drives at 60 mph and Steve drives at 40 mph, how many miles will Steve have driven when they cross paths?
选项:
A、56
B、58
C、60
D、65
E、80
答案:
A
