The following problem is given: It takes thirty minutes to walk to village X, and it is five times faster on a bicycle. How long will it take on a bicycle?

'My brother in Dzhizak has a bicycle, and it goes much faster than a horse or a person.'

The problem is repeated.

'Five times faster ... If you go on foot, you will get there in thirty minutes, but if you go by bicycle, you will get there much faster, of course, probably in one or two minutes.

Luria, 1976; p. 121)