the beatles have to be at a cocert across th river in 17 minutes?

Question

The beatles have to be at a concert across the river in 17 minutes. The problem is that the bridge across the river is very weak and is only strong enough to hold only two people at a time (only two people can cross at a time). They have only one flashlight and anybody crossing the river must have the flashlight at all times.John can cross the bidge in 1 minute, Paul needs 2 minutes, Gearge needs 5 minutes and Ringo needs 10. can they make it to the concert in time? if so how?

Answer 1

1. John and Paul cross the bridge (elapsed time 2 minutes)
2. John returns (elapsed time 3 minutes)
3. George and Ringo cross the bridge (elapsed time 13 minutes)
4. Paul returns (elapsed time 15 minutes)
5. John and Paul cross the bridge (elapsed time 17 minutes)

Answer 2

Ringo goes first with anyone of the others and then shines the flashlight from the other side. The other two then go across - Bingo they made it - or was that Ringo?

Answer 3

yes, they make it, the take a boat

Answer 4

boat