Mr Jones 4 Posted November 5, 2009 Report Share Posted November 5, 2009 (edited) No googling! 1. Why are man hole covers round? 2. Four people need to cross a rickety rope bridge to get back to their camp at night. Unfortunately, they only have one flashlight and it only has enough light left for 17 minutes. The bridge is too dangerous to cross without a flashlight, and it's only strong enough to support two people at any given time. Each of the campers walks at a different speed. One can cross the bridge in one minute, another in two, the third in five, and the slow poke takes 10 to cross. How do the campers make it across in 17 minutes? Edited November 5, 2009 by Mr Jones Quote Link to post Share on other sites
arnieboy 93 Posted November 5, 2009 Report Share Posted November 5, 2009 ok i give in Quote Link to post Share on other sites
Guest lavyheed Posted November 5, 2009 Report Share Posted November 5, 2009 I know the answer to the manhole question. But fecked if i know the 2nd question Quote Link to post Share on other sites
Mac 30 Posted November 5, 2009 Report Share Posted November 5, 2009 1 min and 2 min persons go-- so 2 mins. 1 min person returns-- so 2 +1 = 3 mins then 10 min person and 5 min person goes -- 10+3=13 mins then 2 min person returns - 13+2=15 min then 1 min person and 2 min person goes -- 15+2 =17 mins. Quote Link to post Share on other sites
Timid Toad 18 Posted November 5, 2009 Report Share Posted November 5, 2009 TTgoes and sits in corner this is too much intelligence for me at this time in the evening Quote Link to post Share on other sites
Guest lavyheed Posted November 5, 2009 Report Share Posted November 5, 2009 1 min and 2 min persons go-- so 2 mins. 1 min person returns-- so 2 +1 = 3 mins then 10 min person and 5 min person goes -- 10+3=13 mins then 2 min person returns - 13+2=15 min then 1 min person and 2 min person goes -- 15+2 =17 mins. Woooooooooooooooooosh.....right over my head :headshot:: Quote Link to post Share on other sites
wink hound 0 Posted November 5, 2009 Report Share Posted November 5, 2009 the first one is obvious. Quote Link to post Share on other sites
stealthy1 3,964 Posted November 5, 2009 Report Share Posted November 5, 2009 One of the campers is getting a piggyback Quote Link to post Share on other sites
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