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Tom and Samuel are riding motorcycles down the highway at constant

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Tom and Samuel are riding motorcycles down the highway at constant [#permalink]

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Tom and Samuel are riding motorcycles down the highway at constant speeds. If Tom is now 2 miles ahead of Samuel, how many minutes before Tom is 3 miles ahead of Samuel?

(1) Tom is traveling at 70 miles per hour and Samuel is traveling at 60 miles per hour.
(2) Tom left 5 minutes before Samuel.
[Reveal] Spoiler: OA

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Re: Tom and Samuel are riding motorcycles down the highway at constant [#permalink]

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(1) Tom is traveling at 70 miles per hour and Samuel is traveling at 60 miles per hour.
With the above information, we can calculate the relative speed.
Therefore, we can find out how many minutes it would take Tom to go 3 miles ahead
Sufficient.
(2) Tom left 5 minutes before Samuel.
Knowing how much time before one left is not going to be enough.
We need to know the speed at which they are travelling.
Not sufficient.(Option A)
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Re: Tom and Samuel are riding motorcycles down the highway at constant   [#permalink] 28 Apr 2017, 04:03
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Tom and Samuel are riding motorcycles down the highway at constant

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