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this_n00b_rocks · 10-26-2006, 02:11 PM

Ok, here's how it works. I'll post an IQ problem, and the first person to solve it gets the amount of credits of the post's number.
First problem:

Four persons are standing in front of a canyon. The only bridge can carry only two persons at once. Because of the darkness the persons have to use a torch. Unfortunately there is only one torch. Whenever two persons have crossed the bridge one person must carry back the torch. Person A needs 5 min for crossing the bridge (one way). B needs 10 min, C needs 20 min and D needs 25 min. Two persons together need the time of the slower one. What is the minimum time for the group to cross the bridge?

10-26-2006, 02:11 PM	#1
this_n00b_rocks Banned Join Date: Aug 2006 Location: Flash Drive Age: 33 Posts: 510	IQ Games Ok, here's how it works. I'll post an IQ problem, and the first person to solve it gets the amount of credits of the post's number. First problem: Four persons are standing in front of a canyon. The only bridge can carry only two persons at once. Because of the darkness the persons have to use a torch. Unfortunately there is only one torch. Whenever two persons have crossed the bridge one person must carry back the torch. Person A needs 5 min for crossing the bridge (one way). B needs 10 min, C needs 20 min and D needs 25 min. Two persons together need the time of the slower one. What is the minimum time for the group to cross the bridge? Last edited by this_n00b_rocks; 10-26-2006 at 02:31 PM..