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

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

游客2024-01-12  36
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 The correct answer is D. You are given that Tom traveled 45 miles in 12 hours and that Jim traveled four times as far in one-third the time.
That means that Jim traveled 45×4, or 180 miles in 12×, or 4 hours.
Therefore, Jim traveled 180/4, or 45 miles per hour.
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