I canot slove this!!!!

I really REALLY need help! I don't have a CLUE on what the answer is to this


Riddle:

Once upon a time, there have been a knight, a druid, a paladin and a sorcerer that survived the great battle upon the fields of glory. Some ofthem were wounded, some not. All were deadly tired. They had to escape from a hord of orcs, a whole tribe with more then 35 fighters. Late in the night, they came to a huge bridge, or at least the rest of a once mighty bridge. It was small and seemed to be notvery save. The sorcerer screamed some loud and mighty words and for a second the bridge glew in a blue light.

"I see" the sorcerer said, "that this bridge will break down and fall into the water within 60 minutes. So we have to hurry up. It will only hold twoof us at the same time and it is a long bridge. The wounded knight will need 25 minutes to go over the bridge, and it will take me 20. The paladin can go faster, so he will be on the other side within 10 minutes."

Pointing at the druid he said: "And you can use your spell to move faster. You will need only 5 minutes."

"Ok then, let´s go! Don´t waste time" shouted the knight and started to go. But then he stopped. "I can´t see anything. The bridge is dangerous.We will need your magic light wand to cross it.
Without light we will fall down in the cold and deep water. So always someone has to return to bring back the wand of light to the others."

What shall we do now?" asked the paladin "How can we all reach the other side before the evil orcs will get us? I have no arrow left and we can´tfight them! In which order we have to pass the bridge? Who should go first?"





If anyone can solve, id be very happy

thanks