Lenny Conundrum #176
Wed Jul 26, 2006 5:48 pm
Dear Noo,
Congratulations! You have guessed correctly in the Lenny Conundrum game (round 175). You have won 964 NP!
Yours Sincerely,
The Neopets Team!
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Answer was the Giant Omelette
Congratulations! You have guessed correctly in the Lenny Conundrum game (round 175). You have won 964 NP!
Yours Sincerely,
The Neopets Team!
-------------
Answer was the Giant Omelette
Thu Jul 27, 2006 1:49 am
There's an easy one for this week:
A Grundo, a Gnorbu, a Gelert, and a Grarrl need to walk from Sakhmet to Qasala during a really bad heat wave. The heat is so bad, it's not possible to cross the open desert without some sort of shade. Fortunately, they have one umbrella. Unfortunately, however, only a maximum of two pets at a time can fit under the umbrella. The Grundo can cross the desert alone in 20 minutes. The Gnorbu can make the crossing alone in 16 minutes. The Grarrl can make the crossing alone in 8 minutes. And the Gelert can make the crossing in 4 minutes. Note that when two pets are making the crossing, they must do so at the pace of the slower pet!
What is the minimum number of minutes that it will take for all of the pets to safely be together in Qasala?
Just simple math, really. As long as you think through it, you should get it right.
A Grundo, a Gnorbu, a Gelert, and a Grarrl need to walk from Sakhmet to Qasala during a really bad heat wave. The heat is so bad, it's not possible to cross the open desert without some sort of shade. Fortunately, they have one umbrella. Unfortunately, however, only a maximum of two pets at a time can fit under the umbrella. The Grundo can cross the desert alone in 20 minutes. The Gnorbu can make the crossing alone in 16 minutes. The Grarrl can make the crossing alone in 8 minutes. And the Gelert can make the crossing in 4 minutes. Note that when two pets are making the crossing, they must do so at the pace of the slower pet!
What is the minimum number of minutes that it will take for all of the pets to safely be together in Qasala?
Just simple math, really. As long as you think through it, you should get it right.
Thu Jul 27, 2006 2:55 am
What time did this one come out? I got my answer in at 7:55 pm NST.
Well I see it's been out for over an hour plus people are giving away answers on the boards...great.
Well I see it's been out for over an hour plus people are giving away answers on the boards...great.
Thu Jul 27, 2006 6:46 pm
kc_6201 wrote:What time did this one come out? I got my answer in at 7:55 pm NST.
Well I see it's been out for over an hour plus people are giving away answers on the boards...great.
Yeah, but this time the predominant answer thrown around the boards is wrong... Or at least that was the case when I checked. I think most of the people who rushed got it wrong, so you might still have a chance.
Thu Jul 27, 2006 9:48 pm
Yeah, a lot of neoboarders are saying "it's so easy! It's 52!" And it's not.
Thu Jul 27, 2006 10:07 pm
Ack! I divided all the numbers by 4 to make things easier, and ended up forgetting to multiply it back. 
Ah well, that's probably why they made everything divisible by 4 in the first place... :p
Ah well, that's probably why they made everything divisible by 4 in the first place... :p
Sat Jul 29, 2006 11:13 pm
How can it not be 52? I mean... I know that's just too easy, but you need to have 2 pets cross at a time, then one has to come back with the umbrella to cross again. I've been thinking forever and I still don't see a shorter way! 
Sun Jul 30, 2006 11:38 am
Me too I even triple checked it !!! 
Sun Jul 30, 2006 11:45 am
I got a lower answer than 52 but not sure if it's low enough - I'm checking it with cran_b 
Sun Jul 30, 2006 8:18 pm
I've seen a similar problem before, so I knew it wasn't going to be 52, but I'm not quite sure mine's the absolute fastest way *was too lazy to check it* I think I did everything right at least.
Mon Jul 31, 2006 2:07 am
Hint 1: This is a famous mathematical problem, except it usually involves too little light instead of too much light.
Hint 2: There is more than one way to optimize. If you don't see a second way to optimize the time, you're not reading this carefully enough.
[edit] Clarified that this is two hints, added a little to the first to jog memories.
Hint 2: There is more than one way to optimize. If you don't see a second way to optimize the time, you're not reading this carefully enough.
[edit] Clarified that this is two hints, added a little to the first to jog memories.
Last edited by AySz88 on Mon Jul 31, 2006 4:47 pm, edited 1 time in total.
Mon Jul 31, 2006 12:41 pm
I can't see a smaller answer than 52. can someone give me a more detailed hint plz?
Mon Jul 31, 2006 1:57 pm
Can you PM me with how you're getting 52?
OK here's a hint - try taking a way round that involves the two slowest people not taking two seperate journeys.
OK here's a hint - try taking a way round that involves the two slowest people not taking two seperate journeys.
Tue Aug 01, 2006 9:59 pm
This is also a brain teaser they use during interviews - to test how you think.
Hint: You want the two slowest people to take 1 journey and one journey only. How then, do you order the people?
Hint: The answer is below 52.
Hint: You want the two slowest people to take 1 journey and one journey only. How then, do you order the people?
Hint: The answer is below 52.
Thu Aug 03, 2006 12:21 am
The competition has been judged. The answer is 48 minutes:
Send the 4 + 8 min. pets across - 8 min.
Send the 8 min. pet back - 8 min.
Send the 20 + 16 min. pets across - 20 min.
Send the 4 min. pet back - 4 min.
Send the 4 + 8 min. pets back across - 8 min.
Total time = 48 minutes.
Send the 4 + 8 min. pets across - 8 min.
Send the 8 min. pet back - 8 min.
Send the 20 + 16 min. pets across - 20 min.
Send the 4 min. pet back - 4 min.
Send the 4 + 8 min. pets back across - 8 min.
Total time = 48 minutes.