Person a can cross the bridge in 1 minute b in 2 minutes c in 5 minutes and d in 8 minutes.

Flashlight bridge riddle.

Unfortunately they have only one torch and the bridge is too dangerous to cross without one. The bridge can only hold two or less people at any time and they only have one flashlight so they must travel together or alone. The second fastest can cross in 2 minutes the third fastest can cross in 5 minutes and the slowest can cross in 10. The bridge will be destroyed by a bomb in 17 minutes. They have one torch and because it s night the torch has to be used when crossing the bridge. And they have to walk at the speed of the slowest person.

The answer still adds up to 17. The fastest person can cross in 1 minute. 1 min 2 mins 7 mins and 10 mins. The bridge is weak and only able to carry the weight of two of them at a time. Pause the video whenever you need to to take down the details. The bridge is only strong enough to support two people at a time.

Each of the campers walks at a different speed. Four people need to cross a rickety bridge at night. Four people are on one side of the bridge. Oh and it s like dark and there is only one flashlight so a person who has crossed the bridge has to come back for a return trip in order to lead another person across once again. There is a narrow bridge but it can only hold two people at a time. Four people come to a river in the night.

Everyone has to get across to the other side before that. They only have one torch and it can t be thrown. Not all people take the same time to cross the bridge. One can cross the bridge in 1 minute another in 2 minutes the third in 5 minutes and the slowest camper takes 10 minutes to cross. The flashlight can only travel with a person so every time it crosses the bridge it must be carried back. A rickety bridge riddle.

What is the shortest time needed for all four. The problem is that it s dark and so they cannot cross the bridge without a flashlight and they only have one flashlight. Because they are in a rush and the light is fading they must cross in the minimum time possible and must carry a torch flashlight on each crossing. Times for each person. The bridge is very weak so only two people can cross it at a time. The bridge is too dangerous to cross without a flashlight and it s only strong enough to support two people at any given time.