If Tom traveled 45 miles in 12 hours and Jim traveled four times as far in one-t

游客2024-01-12 17

问题 If Tom traveled 45 miles in 12 hours and Jim traveled four times as far in one-third the time, what was Jim’s average speed, in miles per hour?

选项 A、5
B、15
C、30
D、45
E、90

答案 D

解析

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