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

40 seconds

Explanation:

Ratio of 15:30 = 1:2

20:x

x = 20 x 2 using ratio, also stop putting these Maths challenge qs on website.

x = 40 :)