Solution Step 0/0
A passenger fell asleep on a train halfway to his destination. He slept till he had half as far to go as he went while he slept. How much of the while trip was he sleeping?
Explanations
Two-thirds of one-half the whole trip, that is, one-third.[After Boris A. Kordemsky. The Moscow Puzzles: 359 mathematical recreations. 1972]
Check 2/3 of the trip
Check 1/4 of the trip
Check 1/6 of the trip
Check 1/3 of the trip
