Question 258977: There are more than 1/4 million species of beetle. Assume the average length of a beetle is 1cm and the average walking speed is 10 cm per second. These beetles walk up a gang-plank that is 5 meters long onto an ark. They do this in pairs, side by side, one male and one female from each species. The pairs of beetles are spaced 5 cm apart. How many hours will it take for 1/4 million species of beetles to embark onto the ark once the first pair starts up the gangplank?
__________ hours
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! There are more than 1/4 million species of beetle. Assume the average length of a beetle is 1cm and the average walking speed is 10 cm per second. These beetles walk up a gang-plank that is 5 meters long onto an ark. They do this in pairs, side by side, one male and one female from each species. The pairs of beetles are spaced 5 cm apart. How many hours will it take for 1/4 million species of beetles to embark onto the ark once the first pair starts up the gangplank?
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The length of the column will be 250000*6 cm (if there's 5 cm between them, not 5 cm from center to center, that wasn't clarified)
L = 1500000 cm
At 10 cm/sec, it will take 150000 seconds to pass the bottom of the gang-plank
+ 500/10 seconds for them to go up the gang-plank
--> 150050 seconds total
t = 15005/6 minutes
t = 3001/72 hours
t =~ 41.68 hours
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Were they in 1st class? Or coach?
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