How logical are you?!


Question: Four people need to cross a bridge at night. The bridge is only strong enough to hold at most two people at once. Because it is night a flashlight must be used for all crossings.It takes person A ten minutes to cross, person B five minutes, person C two minutes, and person D one minute. If two cross at the same time they must walk at the slower man's pace. How can you get everyone across in 17 minutes?


Answers: Four people need to cross a bridge at night. The bridge is only strong enough to hold at most two people at once. Because it is night a flashlight must be used for all crossings.It takes person A ten minutes to cross, person B five minutes, person C two minutes, and person D one minute. If two cross at the same time they must walk at the slower man's pace. How can you get everyone across in 17 minutes?

I got it!!
Heree:
C and D : 2 minutes
D comes back: 1 minute
B and A go: 10 minutes
C goes back: 2 minutes
C and D cross: 2 minutes
Total: 17!!
Yay!!^^

i realy thought hard but at least thx 4 the two points

are you sure it's only 17 mins and not 19?!?? lol

person a and b must cross 1st 17 minutes- 10min
c and d must follow after a and b 7-2min with 5 min to spare

c and d cross 1st = 2 min.
d goes back = 3 min.
a and b cross = 13 min
c goes back across = 15 min
c and d cross = 17 min

Mmm, Idk. A little confused about the information...



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