HardMath and Logic
1/4 into tunnel. Meet train at start or end. Speed ratio?
Riddle
1/4 into tunnel. Meet train at start or end. Speed ratio?
Choose an answer
A.Same speed
B.Train is 4x faster
C.Erin is faster
D.Train is 2x faster
Hint: It's a 4-word phrase with 14 letters, starting with "T".
Answer
Train is 2x faster
Why this is the answer
If she meets the train at the end after running 3/4 of the way, and she would have met it at the start after running 1/4 back... set up the time/distance equations.
This riddle is filed under Expert Riddles for Adults and rated Hard.
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