英语翻译Julie Ann commutes to work one morning at an average spe
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英语翻译
Julie Ann commutes to work one morning at an average speed of 40 mph.She returns home along the same route at an average speed of 24 mph.If she spends a total of 2 hours traveling to and from work that day,how many miles is her commute to work?
(A) 24 (B) 30 (C) 32 (D) 34 (E) 40
Julie Ann commutes to work one morning at an average speed of 40 mph.She returns home along the same route at an average speed of 24 mph.If she spends a total of 2 hours traveling to and from work that day,how many miles is her commute to work?
(A) 24 (B) 30 (C) 32 (D) 34 (E) 40
朱丽叶·安有天早上去上班,平均速度为40mph.她下班回家的时候平均速度为24mph.假如她上下班总共花了2小时,那么她上班的路程有多远?
设路程为x,于是有方程
x/40 + x/24 = 2
解得x = 30 miles
故此选C.
设路程为x,于是有方程
x/40 + x/24 = 2
解得x = 30 miles
故此选C.
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