Question

Thomas has constant speeds for both running and walking. When a down-escalator is moving, Thomas can run down it in

15
seconds or walk down it in
30
seconds. One day, when the escalator was broken (and stationary), it took Thomas
20
seconds to run down it.

How long, in seconds, would it take Thomas to walk down the broken escalator?

Answer 1

35 seconds or 40 seconds

Answer 2

I got 40

since 15x2=30

so then 20x2= 40