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?
2006-07-29 06:20:17 · 4 answers · asked by msusparty000 1 in Education & Reference ➔ Homework Help
i think that its 52 minutes.
the gelert goes with the grundo first. this will take 20 minutes.
the gelert goes back alone. this will take 4 minutes.
the gelert goes with gnorbu next. this will take 16 minutes.
the gelert goes back. this will take 4 minutes.
lastly the gelert goes with the grarrl. this will take 8 minutes.
total : 20 + 4 + 16 + 4 + 8 = 52 minutes.
i cant find anything lower than this. hope that this is the right answer.
2006-07-29 07:07:09 · answer #1 · answered by Anonymous · 1⤊ 1⤋
Didn't I just see this question somewhere else....anyway, the answer is still 52 minutes.
20 + 4 = over and back the first time
16 + 4 = over and back the second time
8 minutes over the last time.
20+4+16+4+8=52
the fastest traveler should be the one to bring the umbrella back and get the next one to get across.
2006-08-01 06:34:03 · answer #2 · answered by quntmphys238 6 · 0⤊ 0⤋
I'm afraid I don't know. But hello, fellow Neopets player
2006-07-29 13:23:04 · answer #3 · answered by Rice 2 · 0⤊ 0⤋
Im sorry i dont know either, but i do play neopets! lol.
2006-07-29 13:24:28 · answer #4 · answered by Jojo 2 · 0⤊ 0⤋