GMAT Data Sufficiency (DS) | Re: Tom and Steven are riding motorcycles down the highway at constant spe

Statement 1 is clearly insufficient as no information can be derived regarding speed.

Statement 2:

We can say in 5 min 1 mile is covered
Relative Distance= Relative Speed* Time
So 1 mile= S* (5/60)
Therefore, relative speed is 12 Mph.
Now the distance between them is 2 miles and the question ask about the time when the distance becomes 3 miles so
Relative Distance = 3-2 Miles
Relative Speed = 12 Mph
Time=?
using Relative Distance= Relative Speed* Time
1=12*t
t=(1/12) hr = (1/12)*60 = 5min.


Bunuel
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