Multiple choice

At 9 a.m, train T left the station and two hours later train S left the same station on a parallel track. If train T averaged 60 kilometers per hour and train S averaged 75 kilometers per hour until S passed T, at what time did S pass T?

  1. 2 p.m

  2. 5 p.m

  3. 6 p.m

  4. 7 p.m

  5. 9 p.m
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

If the two trains met x hours after the first train left the station, we get the equation 60x = 75(X - 2). So, 15x = 150, or x = 10. So, the two trains would meet 10 hours after 9 a.m, or at 7 p.m.

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